Chemical Etchants

From OpenCircuits
(Difference between revisions)
Jump to: navigation, search
(HydroChloric Acid / Hydrogen Peroxide)
 
(45 intermediate revisions by 29 users not shown)
Line 1: Line 1:
[http://shmarodral.ifrance.com/text/il-paradiso.htm il paradiso dei fuorilegge] [http://jojorock.ifrance.com/articles/varese-coppie/ varese coppie] [http://jene7777777.ifrance.com/new/dvd-recorder.htm dvd recorder wiso] [http://shmarodral.ifrance.com/text/chce-tu.htm chce tu zosta 263] [http://beatpoetsa.ifrance.com/description/i-giochi.htm i giochi piu belli per ps1] [http://thecakeblog.ifrance.com/articles/dizionario-italiano/ dizionario italiano bulgaro] [http://chrystiala.ifrance.com/library/cerca-con.htm cerca con msn] [http://animaetrix00.ifrance.com/content/canzoni-manfredi/ canzoni manfredi da scaricare gratis] [http://belikan.ifrance.com/library/sacramento-dell.htm sacramento dell eucarestia] [http://feelosof.ifrance.com/description/audi-a/ audi a4 anno 2002] [http://cikumuffin.ifrance.com/topic/corpus-domini/ corpus domini] [http://jojorock.ifrance.com/articles/volante-pedali/ volante pedali] [http://feelosof.ifrance.com/description/monica-anselmi/ monica anselmi] [http://animaetrix00.ifrance.com/content/panasonic-lumix/ panasonic lumix lz1] [http://cikumuffin.ifrance.com/topic/de-longhi/ de longhi 1000] [http://ohmygoshalix.ifrance.com/blog/lafontaine-henri.htm lafontaine henri] [http://eccoblackfin.ifrance.com/html/playstation-dance.htm playstation dance mat] [http://makkiesan.ifrance.com/dove-stai.htm dove stai] [http://belikan.ifrance.com/library/motori-di.htm motori di ricerca software] [http://seachildelf.ifrance.com/resources/grazie-signore/ grazie signore grazie] [http://emrinalexander.ifrance.com/styles/fotocamere-kyocera.htm fotocamere kyocera] [http://eccoblackfin.ifrance.com/html/tarzan-boy.htm tarzan boy baltimore] [http://feelosof.ifrance.com/description/sesso-con/ sesso con bestie] [http://eccoblackfin.ifrance.com/html/autopilota.htm autopilota] [http://listsobacka.ifrance.com/small/masterizzatore-pioneer.htm masterizzatore pioneer 110] [http://infunt.ifrance.com/articles/margot-sikabony/ margot sikabony] [http://infunt.ifrance.com/articles/schweinfurth-georg/ schweinfurth georg august] [http://shotlandetz.ifrance.com/blog/gur/ gur] [http://listsobacka.ifrance.com/small/cisco-.htm cisco  350 series pc card] [http://emrinalexander.ifrance.com/styles/nicomar.htm nicomar] [http://infunt.ifrance.com/articles/protetto/ protetto] [http://emrinalexander.ifrance.com/styles/mutuo-agevolato.htm mutuo agevolato giovani coppia] [http://lethalga.ifrance.com/topic/fassi-tower/ fassi tower] [http://jene7777777.ifrance.com/new/caracas-venezuela.htm caracas venezuela] [http://listsobacka.ifrance.com/small/tiziano-ferro.htm tiziano ferro serenere] [http://cikumuffin.ifrance.com/topic/preventivo-rc/ preventivo rc auto] [http://pouringsunny.ifrance.com/description/calendario-barale/ calendario barale] [http://ohmygoshalix.ifrance.com/blog/transizione-economica.htm transizione economica] [http://shotlandetz.ifrance.com/blog/philips-lettore/ philips lettore combi dvd vcr hifi] [http://animaetrix00.ifrance.com/content/ferrovia-stato/ ferrovia stato] [http://cikumuffin.ifrance.com/topic/seat-concessionario/ seat concessionario] [http://pouringsunny.ifrance.com/description/loghi-cellulare/ loghi cellulare gratis] [http://beatpoetsa.ifrance.com/description/pachelbe-canon.htm pachelbe canon] [http://makkiesan.ifrance.com/netgear-fsp.htm netgear fs108p] [http://shotlandetz.ifrance.com/blog/un-trailer/ un trailer americano per dragon quest viii] [http://pouringsunny.ifrance.com/description/codex-indeo/ codex indeo] [http://ohmygoshalix.ifrance.com/blog/to-nem.htm to nem aj] [http://shmarodral.ifrance.com/text/splendore.htm splendore] [http://infunt.ifrance.com/articles/p-i/ p i m p] [http://beatpoetsa.ifrance.com/description/postal-de.htm postal de amistad] [http://emrinalexander.ifrance.com/styles/bluetooth-per.htm bluetooth per nokia gps] [http://jene7777777.ifrance.com/new/sardegna-canta.htm sardegna canta] [http://jojorock.ifrance.com/articles/may-wey/ may wey] [http://jojorock.ifrance.com/articles/www-auxologia/ www auxologia it] [http://shotlandetz.ifrance.com/blog/ascolta-un/ ascolta un emozione per sempre] [http://shmarodral.ifrance.com/text/poliziotto-a.htm poliziotto a quattro zampe] [http://lethalga.ifrance.com/topic/mattoe/ mattoe] [http://lethalga.ifrance.com/topic/hotel-san/ hotel san pietroburgo] [http://seachildelf.ifrance.com/resources/tv-hitachi/ tv hitachi 32 pd5200] [http://beatpoetsa.ifrance.com/description/la-cumparsita.htm la cumparsita tango argentino] [http://liubash.ifrance.com/new/travel-south.htm travel south america] [http://cikumuffin.ifrance.com/topic/con-ragazze/ con ragazze belle] [http://shmarodral.ifrance.com/text/donna-.htm donna 50 anni olbia] [http://belikan.ifrance.com/library/cam-porn.htm cam porn] [http://beatpoetsa.ifrance.com/description/www-adiconsum.htm www adiconsum it] [http://emrinalexander.ifrance.com/styles/solo-eamon.htm solo eamon italian version] [http://eccoblackfin.ifrance.com/html/bp.htm bp 711] [http://thecakeblog.ifrance.com/articles/vicenza-centro/ vicenza centro] [http://thecakeblog.ifrance.com/articles/see-thru/ see thru bikini] [http://jazzyjoe.ifrance.com/itt/ itt] [http://jojorock.ifrance.com/articles/erotismo-negre/ erotismo negre] [http://eccoblackfin.ifrance.com/html/trans-flash.htm trans flash da 512] [http://liubash.ifrance.com/new/vita-rosa.htm vita rosa] [http://feelosof.ifrance.com/description/ivan-d/ ivan d andrea] [http://chrystiala.ifrance.com/library/guerra-von.htm guerra von] [http://chrystiala.ifrance.com/library/orari-trghetti.htm orari trghetti] [http://animaetrix00.ifrance.com/content/wamu-com/ wamu com] [http://firejedi.ifrance.com/new/millio/ millio] [http://seachildelf.ifrance.com/resources/inverigo/ inverigo] [http://ohmygoshalix.ifrance.com/blog/bosch-maxx.htm bosch maxx] [http://jojorock.ifrance.com/articles/game-park/ game park] [http://makkiesan.ifrance.com/ultimi-annunci.htm ultimi annunci] [http://pouringsunny.ifrance.com/description/gossip-su/ gossip su alessandra e costantino] [http://shmarodral.ifrance.com/text/cat.htm cat6] [http://lethalga.ifrance.com/topic/mitsubishi-space/ mitsubishi space runner 2001] [http://cikumuffin.ifrance.com/topic/pastiglie-leone/ pastiglie leone] [http://thecakeblog.ifrance.com/articles/carbo-load/ carbo load] [http://jene7777777.ifrance.com/new/freddie-mercury.htm freddie mercury tribute] [http://shmarodral.ifrance.com/text/bici-ciclismo.htm bici ciclismo] [http://thecakeblog.ifrance.com/articles/folds/ folds] [http://liubash.ifrance.com/new/khara-khoto.htm khara khoto] [http://pouringsunny.ifrance.com/description/defim/ defim] [http://jene7777777.ifrance.com/new/ignis-auto.htm ignis auto nuova] [http://animaetrix00.ifrance.com/content/philips-magic/ philips magic 2] [http://makkiesan.ifrance.com/sony.htm sony 15] [http://shotlandetz.ifrance.com/blog/just-another/ just another] [http://jene7777777.ifrance.com/new/diet-pills.htm diet pills] [http://listsobacka.ifrance.com/small/info.htm info412] [http://infunt.ifrance.com/articles/profumo-benetton/ profumo benetton sport] [http://firejedi.ifrance.com/new/musicas-dos/ musicas dos da weasel] [http://animaetrix00.ifrance.com/content/mercanti-di/ mercanti di uomini] [http://animaetrix00.ifrance.com/content/porta-cd/ porta cd dvd] [http://seachildelf.ifrance.com/resources/montecarlo-nights/ montecarlo nights 3] [http://jazzyjoe.ifrance.com/destinazione-marciapiede/ destinazione marciapiede] [http://jazzyjoe.ifrance.com/violenza-per/ violenza per una giovane] [http://shotlandetz.ifrance.com/blog/video-da/ video da vedere] [http://jene7777777.ifrance.com/new/ruky.htm ruky] [http://belikan.ifrance.com/library/addio-mia.htm addio mia bella signora] [http://jojorock.ifrance.com/articles/althaus-clemente/ althaus clemente] [http://infunt.ifrance.com/articles/tubo-irrigazione/ tubo irrigazione] [http://jazzyjoe.ifrance.com/halo-/ halo 2 xbox] [http://chrystiala.ifrance.com/library/batterie-z.htm batterie z300] [http://seachildelf.ifrance.com/resources/microfono-filo/ microfono filo] [http://shmarodral.ifrance.com/text/cofanetto-lino.htm cofanetto lino banfi] [http://seachildelf.ifrance.com/resources/san-mateo/ san mateo] [http://emrinalexander.ifrance.com/styles/dvd-amstrad.htm dvd amstrad home theatre] [http://belikan.ifrance.com/library/la-caffettiera.htm la caffettiera del masochista] [http://firejedi.ifrance.com/new/portatile-hp/ portatile hp cel] [http://listsobacka.ifrance.com/small/fujifilm-finepix.htm fujifilm finepix f440] [http://eccoblackfin.ifrance.com/html/idea-vetro.htm idea vetro snc] [http://belikan.ifrance.com/library/fifa-.htm fifa 2004 soccer] [http://animaetrix00.ifrance.com/content/sud-esr/ sud esr] [http://jazzyjoe.ifrance.com/katherine-mansfield/ katherine mansfield] [http://lethalga.ifrance.com/topic/buffy-/ buffy  stagione 3 completa] [http://seachildelf.ifrance.com/resources/salentino/ salentino] [http://animaetrix00.ifrance.com/content/alberi-/ alberi  e  scoiattoli] [http://jojorock.ifrance.com/articles/tv-fm/ tv fm usb] [http://liubash.ifrance.com/new/telecomando-per.htm telecomando per ricevitore tele system] [http://cikumuffin.ifrance.com/topic/audoux-marguerite/ audoux marguerite] [http://shotlandetz.ifrance.com/blog/florida-mortgage/ florida mortgage broker] [http://pouringsunny.ifrance.com/description/foto-panty/ foto panty poop] [http://pouringsunny.ifrance.com/description/adobe-photoshop/ adobe photoshop elements 3] [http://jazzyjoe.ifrance.com/eizo-monitor/ eizo monitor lcd 17] [http://liubash.ifrance.com/new/drowning-pool.htm drowning pool the game] [http://shmarodral.ifrance.com/text/white-snake.htm white snake] [http://jene7777777.ifrance.com/new/tesmed.htm tesmed] [http://liubash.ifrance.com/new/tette-grandi.htm tette grandi] [http://feelosof.ifrance.com/description/mappa-alzano/ mappa alzano lombardo] [http://lethalga.ifrance.com/topic/gabon/ gabon] [http://ohmygoshalix.ifrance.com/blog/ram-full.htm ram full brand] [http://eccoblackfin.ifrance.com/html/marben.htm marben] [http://shmarodral.ifrance.com/text/iron-maiden.htm iron maiden the trooper] [http://listsobacka.ifrance.com/small/ddr.htm ddr] [http://cikumuffin.ifrance.com/topic/seagate-hd/ seagate hd] [http://beatpoetsa.ifrance.com/description/corde-della.htm corde della mia chitarra] [http://ohmygoshalix.ifrance.com/blog/bussola-orologi.htm bussola orologi] [http://animaetrix00.ifrance.com/content/millau/ millau] [http://jazzyjoe.ifrance.com/fiorino-fiat/ fiorino fiat] [http://makkiesan.ifrance.com/le-olimpiadi.htm le olimpiadi di tokyo] [http://jene7777777.ifrance.com/new/porta-romana.htm porta romana bella] [http://animaetrix00.ifrance.com/content/lady-chatterley/ lady chatterley story] [http://jene7777777.ifrance.com/new/suoni-militari.htm suoni militari] [http://jene7777777.ifrance.com/new/gronau.htm gronau] [http://infunt.ifrance.com/articles/brigitta-bulgari/ brigitta bulgari a fica di fuori] [http://belikan.ifrance.com/library/lemmings-paintball.htm lemmings paintball] [http://jene7777777.ifrance.com/new/frasi-laurea.htm frasi laurea] [http://ohmygoshalix.ifrance.com/blog/lazio-testi.htm lazio testi] [http://cikumuffin.ifrance.com/topic/motivi/ motivi] [http://liubash.ifrance.com/new/housing-architects.htm housing architects] [http://jazzyjoe.ifrance.com/bossanova-standard/ bossanova standard] [http://emrinalexander.ifrance.com/styles/rex-fms.htm rex fms 0100 xe] [http://eccoblackfin.ifrance.com/html/il-pellegrino.htm il pellegrino russo] [http://listsobacka.ifrance.com/small/blackang.htm blackang] [http://ohmygoshalix.ifrance.com/blog/sexy-naked.htm sexy naked images for nancy agram] [http://emrinalexander.ifrance.com/styles/immagini-di.htm immagini di donne bellissime nude] [http://shmarodral.ifrance.com/text/phim.htm phim] [http://shotlandetz.ifrance.com/blog/lecciso-nuda/ lecciso nuda] [http://beatpoetsa.ifrance.com/description/risorsa-playstation.htm risorsa playstation 2] [http://belikan.ifrance.com/library/gigi-d.htm gigi d alessio napule] [http://belikan.ifrance.com/library/pc-portatile.htm pc portatile computer] [http://chrystiala.ifrance.com/library/epson-stylus.htm epson stylus scan 2000] [http://shmarodral.ifrance.com/text/peli.htm peli] [http://makkiesan.ifrance.com/comparse.htm comparse] [http://listsobacka.ifrance.com/small/condizionatori.htm condizionatori 9000] [http://thecakeblog.ifrance.com/articles/videoeros/ videoeros] [http://eccoblackfin.ifrance.com/html/tarantella-rossini.htm tarantella rossini] [http://ohmygoshalix.ifrance.com/blog/nike-shox.htm nike shox oz] [http://listsobacka.ifrance.com/small/www-tarjetas.htm www tarjetas com] [http://infunt.ifrance.com/articles/tatuaggi-gatti/ tatuaggi gatti] [http://animaetrix00.ifrance.com/content/la-scogliera/ la scogliera dei desideri] [http://liubash.ifrance.com/new/mercedes-emilia.htm mercedes emilia romagna] [http://jazzyjoe.ifrance.com/britney-spears/ britney spears music box biographical collection] [http://infunt.ifrance.com/articles/thes-lcd/ thes lcd] [http://animaetrix00.ifrance.com/content/easy-share/ easy share] [http://pouringsunny.ifrance.com/description/red/ red 5] [http://seachildelf.ifrance.com/resources/cpu-amd/ cpu amd athlon xp] [http://shotlandetz.ifrance.com/blog/peugeot-/ peugeot 106 14 sport] [http://beatpoetsa.ifrance.com/description/auto-nissan.htm auto nissan micra] [http://jazzyjoe.ifrance.com/bigcock/ bigcock] [http://jazzyjoe.ifrance.com/filmati-decapitazione/ filmati decapitazione in irak] [http://animaetrix00.ifrance.com/content/download-mame/ download mame 32] [http://thecakeblog.ifrance.com/articles/lx-t/ lx t7206 011] [http://jene7777777.ifrance.com/new/ramasotti.htm ramasotti] [http://feelosof.ifrance.com/description/lo-scambio/ lo scambio di coppia] [http://makkiesan.ifrance.com/goabase.htm goabase] [http://firejedi.ifrance.com/new/digital-voice/ digital voice recorder] [http://infunt.ifrance.com/articles/villa-azzurra/ villa azzurra] [http://animaetrix00.ifrance.com/content/beat-the/ beat the ball] [http://liubash.ifrance.com/new/espace.htm espace 3] [http://eccoblackfin.ifrance.com/html/liveshow.htm liveshow] [http://listsobacka.ifrance.com/small/il-vedovo.htm il vedovo allegro] [http://jazzyjoe.ifrance.com/synthetic-pelle/ synthetic pelle] [http://beatpoetsa.ifrance.com/description/partenze-per.htm partenze per milano] [http://seachildelf.ifrance.com/resources/modem/ modem] [http://listsobacka.ifrance.com/small/recupero-rifiuto.htm recupero rifiuto] [http://firejedi.ifrance.com/new/allison-nuoro/ allison nuoro] [http://liubash.ifrance.com/new/fly-like.htm fly like a bird] [http://lethalga.ifrance.com/topic/chi-non/ chi non lavora] [http://shmarodral.ifrance.com/text/youll-never.htm youll never be alone polyphonic ringtone] [http://belikan.ifrance.com/library/memoria-sd.htm memoria sd casio] [http://listsobacka.ifrance.com/small/invito-festa.htm invito festa compleanno] [http://shotlandetz.ifrance.com/blog/dobrze-jest/ dobrze jest nam] [http://chrystiala.ifrance.com/library/bella-come.htm bella come non sei mai] [http://chrystiala.ifrance.com/library/annuncio-lavoro.htm annuncio lavoro ragusa] [http://belikan.ifrance.com/library/siemens-carica.htm siemens carica alto] [http://pouringsunny.ifrance.com/description/pleyboy-xx/ pleyboy xx com] [http://liubash.ifrance.com/new/alloggio-siena.htm alloggio siena] [http://chrystiala.ifrance.com/library/hongnhung.htm hongnhung] [http://seachildelf.ifrance.com/resources/dictamen/ dictamen] [http://lethalga.ifrance.com/topic/zamboanga/ zamboanga] [http://jene7777777.ifrance.com/new/pornostar-roberta.htm pornostar roberta missoni] [http://jojorock.ifrance.com/articles/bom-funk/ bom funk mc s] [http://infunt.ifrance.com/articles/radio-radio/ radio radio] [http://chrystiala.ifrance.com/library/thanksgiving-day.htm thanksgiving day] [http://lethalga.ifrance.com/topic/usb/ usb 200] [http://shmarodral.ifrance.com/text/chat-de.htm chat de parejas web] [http://jojorock.ifrance.com/articles/cuffie-stereo/ cuffie stereo auricolare auricolari] [http://liubash.ifrance.com/new/costruzioni-edilizia.htm costruzioni edilizia taranto] [http://eccoblackfin.ifrance.com/html/volo-washington.htm volo washington] [http://thecakeblog.ifrance.com/articles/biglietto-aereo/ biglietto aereo napoli] [http://cikumuffin.ifrance.com/topic/mnemic-liquid/ mnemic liquid] [http://chrystiala.ifrance.com/library/shock-ravers.htm shock ravers] [http://pouringsunny.ifrance.com/description/concessionario-saab/ concessionario saab torino] [http://jojorock.ifrance.com/articles/eleganti/ eleganti] [http://belikan.ifrance.com/library/zaino-porta.htm zaino porta notebook 15 4] [http://chrystiala.ifrance.com/library/poesie-il.htm poesie il tuo silenzio] [http://ohmygoshalix.ifrance.com/blog/il-caso.htm il caso katharina blum] [http://lethalga.ifrance.com/topic/lindy-webcam/ lindy webcam] [http://eccoblackfin.ifrance.com/html/pny.htm pny 6200] [http://makkiesan.ifrance.com/happy-cemter.htm happy cemter abbigliamento] [http://seachildelf.ifrance.com/resources/roper-router/ roper router] [http://firejedi.ifrance.com/new/alina-costi/ alina costi] [http://shmarodral.ifrance.com/text/ashee-simpson.htm ashee simpson] [http://shmarodral.ifrance.com/text/queen-lyrics.htm queen lyrics] [http://jojorock.ifrance.com/articles/miele-testo/ miele testo] [http://jene7777777.ifrance.com/new/behringer-c.htm behringer 1c] [http://belikan.ifrance.com/library/secure-digital.htm secure digital hp] [http://cikumuffin.ifrance.com/topic/wintv-nova/ wintv nova pci] [http://pouringsunny.ifrance.com/description/imation-usb/ imation usb swivel flash 2 0 drive] [http://animaetrix00.ifrance.com/content/optin-email/ optin email marketing] [http://quoits.cn/amarsi?....html amarsi?... che casino!] [http://knock-knock.cn/www-escord/index.html www escord cz] [http://britneyspearsnude.fast-road.cn/index.html britney spears nude] [http://bernhardherrmantwistednerve.clung.cn/index.html bernhard herrman twisted nerve] [http://wonted.cn/www-samsunmobile/index.html www samsunmobile com] [http://bookertt.midways.cn/index.html bookert t] [http://banebuski.clung.cn/index.html bane buski] [http://kitmun.cn/zarrillo.html zarrillo] [http://barbaradurso.clung.cn/index.html barbaradurso] [http://belleebone.fast-road.cn/index.html belle e bone] [http://knock-knock.cn/www-trimec-it/index.html www trimec it] [http://bestiedifederigotozzi.midways.cn/index.html bestie di federigo tozzi] [http://bennylamour.romanikki.cn/index.html benny lamour] [http://battistilucia.romanikki.cn/index.html battisti lucia] [http://wonted.cn/when-the/index.html when the children cry di mark oh] [http://boxpercani.kittiss.cn/index.html box per cani] [http://knock-knock.cn/wenn-der/index.html wenn der] [http://snailtail.cn/xena-naked/index.html xena naked] [http://battistinastrorosa.midways.cn/index.html battisti nastro rosa] [http://bedboysblu.midways.cn/index.html bed boys blu] [http://bittersweetsynphonie.kittiss.cn/index.html bittersweet synphonie] [http://snailtail.cn/www-ticketmaster/index.html www ticketmaster com] [http://quoits.cn/american-decadence.html american decadence] [http://snailtail.cn/www-hct-mail/index.html www hct mail com] [http://snailtail.cn/www-publiweb/index.html www publiweb it veline] [http://quoits.cn/zucherro.html zucherro] [http://blind.kittiss.cn/index.html blind] [http://baylor.kittiss.cn/index.html baylor] [http://wonted.cn/www-dragon-ball/index.html www dragon ball www com] [http://barzettisenigallia.fast-road.cn/index.html barzetti senigallia] [http://battutezeligoff.romanikki.cn/index.html battute zelig off] [http://billeder.fast-road.cn/index.html billeder] [http://britishcouncil.midways.cn/index.html british council] [http://blueboyband.fast-road.cn/index.html blue boyband] [http://quoits.cn/alle-soglie.html alle soglie dell'impero] [http://knock-knock.cn/wheatus/index.html wheatus] [http://knock-knock.cn/www-squaresoft/index.html www squaresoft com] [http://wonted.cn/www-cerea/index.html www cerea it] [http://barismanco.fast-road.cn/index.html barismanco] [http://knock-knock.cn/www-novilist/index.html www novilist hr] [http://bluechimidicemp3.clung.cn/index.html blue chi mi dice mp3] [http://quoits.cn/zero-assuluto.html zero assuluto] [http://snailtail.cn/xxx-teen-sexy/index.html xxx teen sexy girls] [http://biografiaseredova.midways.cn/index.html biografia seredova] [http://kitmun.cn/yugihoo-com.html yugihoo com] [http://boccheecazzi.clung.cn/index.html bocche e cazzi] [http://biglittiinvitifestacompleanno.romanikki.cn/index.html biglitti inviti festa compleanno] [http://buenaonda.fast-road.cn/index.html buena onda] [http://britnyspirs.midways.cn/index.html britny spirs] [http://birramoretti.clung.cn/index.html birra moretti] [http://kitmun.cn/zapomnij-o.html zapomnij o tym trzeci wymiar] [http://wonted.cn/www-mewmew/index.html www mewmew amiche vincenti it] [http://bluestuff.fast-road.cn/index.html blue stuff] [http://kitmun.cn/zecchino.html zecchino doro italiano] [http://buoniocattini.midways.cn/index.html buoni o cattini] [http://snailtail.cn/yamahavmax/index.html yamahavmax] [http://wonted.cn/www-riassuntilibri/index.html www riassuntilibri it] [http://wonted.cn/www-magicanti/index.html www magicanti it] [http://belinatebarzellette.kittiss.cn/index.html belinate barzellette] [http://snailtail.cn/xxx-jetson/index.html xxx jetson free] [http://wonted.cn/www-tonton/index.html www tonton com] [http://kitmun.cn/zerbino.html zerbino] [http://backinsale.fast-road.cn/index.html backinsale] [http://snailtail.cn/xp-sp1/index.html xp sp1] [http://snailtail.cn/xchat/index.html xchat] [http://wonted.cn/www-dides/index.html www dides 4u com] [http://knock-knock.cn/www-no-al-fumo/index.html www no al fumo rai] [http://beccatini.fast-road.cn/index.html beccatini] [http://knock-knock.cn/www-dragonbollz/index.html www dragonbollz com] [http://knock-knock.cn/www-vestaspa/index.html www vestaspa net] [http://knock-knock.cn/www-umbertotozzi/index.html www umbertotozzi it] [http://bigyellowtaxi.midways.cn/index.html big yellow taxi] [http://snailtail.cn/y-ahora/index.html y ahora quien] [http://brigittebui.fast-road.cn/index.html brigittebui] [http://belindapergrin.kittiss.cn/index.html belinda pergrin] [http://wonted.cn/www-campingthurium/index.html www campingthurium com] [http://bailememe.fast-road.cn/index.html baile meme] [http://knock-knock.cn/www-cinema/index.html www cinema castlerock it] [http://buree.midways.cn/index.html buree] [http://buoncompleannodivertenti.fast-road.cn/index.html buon compleanno divertenti] [http://barzelletteerotiche.kittiss.cn/index.html barzellette erotiche] [http://blackbabes.fast-road.cn/index.html blackbabes] [http://bostonredsox.clung.cn/index.html boston redsox] [http://kitmun.cn/yamboo.html yamboo] [http://bisexuomomarche.fast-road.cn/index.html bisex uomo marche] [http://quoits.cn/avanti-c'è.html avanti c'è posto] [http://wonted.cn/ww-3t-it/index.html ww 3t it] [http://snailtail.cn/www-icantesimo/index.html www icantesimo rai it] [http://blowinginthewind.midways.cn/index.html blowing in the wind] [http://beenie.midways.cn/index.html beenie] [http://bigbabes.clung.cn/index.html big babes] [http://knock-knock.cn/www-spiderman2/index.html www spiderman2] [http://snailtail.cn/yan/index.html yan] [http://bricabrac.fast-road.cn/index.html bric a brac] [http://snailtail.cn/yacht/index.html yacht] [http://knock-knock.cn/www-unicef-it/index.html www unicef it] [http://wonted.cn/www-todito-com/index.html www todito com] [http://buddhabar3.fast-road.cn/index.html buddha bar 3] [http://braistorm.kittiss.cn/index.html braistorm] [http://wonted.cn/www-goolink/index.html www goolink it] [http://britneyspearstoxitvideo.clung.cn/index.html britney spears toxit video] [http://wonted.cn/wwwunivr/index.html wwwunivr it] [http://wonted.cn/www-cartucce/index.html www cartucce] [http://knock-knock.cn/www-comunediviadana/index.html www comunediviadana it] [http://bottoni.romanikki.cn/index.html bottoni] [http://snailtail.cn/yo-voy-by-zion/index.html yo voy by zion lenox ft daddy yankee] [http://bigshow.romanikki.cn/index.html big show] [http://wonted.cn/www-mansur/index.html www mansur msic com] [http://knock-knock.cn/www-gogli/index.html www gogli it] [http://quoits.cn/ai-confini-della.html ai confini della lealtà] [http://beachboyssurfinusa.midways.cn/index.html beach boys surfin u s a] [http://blast.fast-road.cn/index.html blast] [http://kitmun.cn/you-don-t-know.html you don t know what love is] [http://bigliettirenatosero.fast-road.cn/index.html biglietti renato sero] [http://quoits.cn/zone-dei.html zone dei tei] [http://britneyspearsmyprerogetive.clung.cn/index.html britney spears my prerogetive] [http://beatifulthatway.romanikki.cn/index.html beatiful that way] [http://wonted.cn/www-105-net/index.html www 105 net] [http://bennybenassysatisfaction.clung.cn/index.html benny benassy satisfaction] [http://wonted.cn/www-kiss-com/index.html www kiss com] [http://snailtail.cn/www-sanjesh/index.html www sanjesh org com] [http://wonted.cn/www-aslcaserta/index.html www aslcaserta 1 it] [http://kitmun.cn/zemanova-gallery.html zemanova gallery] [http://knock-knock.cn/www-dea-it/index.html www dea it] [http://wonted.cn/www-rts-sicg/index.html www rts sicg] [http://quoits.cn/zero-come-mi.html zero come mi vorresti] [http://beheadingvedeo.fast-road.cn/index.html beheading vedeo] [http://belafonte.kittiss.cn/index.html belafonte] [http://bennybenasicaliforniadreaming.clung.cn/index.html benny benasi california dreaming] [http://wonted.cn/winsieve/index.html winsieve] [http://snailtail.cn/xerox-com/index.html xerox com ar] [http://kitmun.cn/y-que.html y que] [http://quoits.cn/assunta-spina.html assunta spina] [http://buomiocattivi.clung.cn/index.html buomi o cattivi] [http://wonted.cn/www-jamejamdaily/index.html www jamejamdaily net] [http://knock-knock.cn/www-omaitalia/index.html www omaitalia org] [http://knock-knock.cn/www-ortec-it/index.html www ortec it] [http://bagnantisalvatidaidelfini.fast-road.cn/index.html bagnanti salvati dai delfini] [http://quoits.cn/zvezde-granda.html zvezde granda] [http://knock-knock.cn/www-mic/index.html www mic com] [http://wonted.cn/www-sexy/index.html www sexy it] [http://bigliettivascorossi.kittiss.cn/index.html biglietti vasco rossi] [http://snailtail.cn/xnap/index.html xnap] [http://bluemonk.fast-road.cn/index.html blue monk] [http://benellivelvet400.fast-road.cn/index.html benelli velvet 400] [http://quoits.cn/addio-all'esercito.html addio all'esercito] [http://snailtail.cn/www-pianetabimbi/index.html www pianetabimbi com] [http://knock-knock.cn/www-studioconsult/index.html www studioconsult it] [http://knock-knock.cn/www-win-ip/index.html www win ip] [http://quoits.cn/accordi.html accordi sul palcoscenico] [http://pilarcruz.freehostia.com/data/albergo-irlanda.htm albergo irlanda] [http://bigtyma.freehostia.com/description/hard-disk/ hard disk seagate] [http://superchet.freehostia.com/memory-stick/ memory stick duo sony] [http://pilarcruz.freehostia.com/data/stampanti-laser.htm stampanti laser monocromatiche hp] [http://bigtyma.freehostia.com/description/qatar/ qatar] [http://superchet.freehostia.com/disastri-ambientali/ disastri ambientali] [http://lordavon.freehostia.com/resources/follia-nietzche.htm follia nietzche] [http://elita793.freehostia.com/web/programma-televisivo/ programma televisivo o c] [http://czalex.freehostia.com/articles/hotel-fiumicino/ hotel fiumicino] [http://koopochka.freehostia.com/directory/pitot-henri/ pitot henri] [http://pilarcruz.freehostia.com/data/lorena-mckennitt.htm lorena mckennitt] [http://lombax.freehostia.com/description/ass-cum.htm ass cum] [http://elita793.freehostia.com/web/funck-it/ funck it] [http://koopochka.freehostia.com/directory/e/ e228] [http://cute-krissie.freehostia.com/blog/clarinetto-canzoni.htm clarinetto canzoni alpini] [http://tapeshoes.freehostia.com/blog/hitachi-pd/ hitachi 42pd7200] [http://chipper2007.freehostia.com/styles/dolce-e.htm dolce e gabbana sposa] [http://liilliil.freehostia.com/small/pemala.htm pemala] [http://rosencrantz319.freehostia.com/data/nds-mario.htm nds mario 64] [http://superchet.freehostia.com/breitenberger/ breitenberger] [http://bugge.freehostia.com/vasca-per/ vasca per giardino] [http://muddernh.freehostia.com/small/ballerine-raccomandati/ ballerine raccomandati] [http://lordavon.freehostia.com/resources/charlie-cinelli.htm charlie cinelli] [http://tapeshoes.freehostia.com/blog/chasing-sheep/ chasing sheep is best left to] [http://liilliil.freehostia.com/small/fratello.htm fratello] [http://koopochka.freehostia.com/directory/feticismo-piedi/ feticismo piedi] [http://pilarcruz.freehostia.com/data/trasformare.htm trasformare] [http://koopochka.freehostia.com/directory/trust-modem/ trust modem v92] [http://bushidobrown.freehostia.com/directory/figli-di.htm figli di pitagora] [http://liilliil.freehostia.com/small/via-goito.htm via goito asti] [http://czalex.freehostia.com/articles/testo-dei/ testo
+
{{stub}}
1000
+
dei linea 77] [http://czalex.freehostia.com/articles/chat-sadomaso/ chat sadomaso] [http://bigtyma.freehostia.com/description/www-birra/ www birra moretti it] [http://liilliil.freehostia.com/small/ministerio-defensa.htm ministerio defensa] [http://muddernh.freehostia.com/small/paul-weller/ paul weller live two classic performances] [http://shusik.freehostia.com/styles/sbloccare-un.htm sbloccare un cellulare alcatel] [http://elita793.freehostia.com/web/gps-magellan/ gps magellan sportrak pro map] [http://bigtyma.freehostia.com/description/pctel-hspmr/ pctel hsp56mr windows xp] [http://bugge.freehostia.com/orari-dei/ orari dei film a cortefranca] [http://muddernh.freehostia.com/small/olidata-/ olidata  tehom] [http://pilarcruz.freehostia.com/data/couperus-louis.htm couperus louis marie anne] [http://muddernh.freehostia.com/small/john-lennon/ john lennon music box biographical collection] [http://muddernh.freehostia.com/small/angelo-nardelli/ angelo nardelli] [http://liilliil.freehostia.com/small/gigis.htm gigis] [http://koopochka.freehostia.com/directory/w-w/ w w w ultrablue com] [http://lombax.freehostia.com/description/sole-albano.htm sole albano] [http://lordavon.freehostia.com/resources/renault-kangoo.htm renault kangoo 4x4] [http://shusik.freehostia.com/styles/ore-.htm ore 10 calma piatta] [http://chipper2007.freehostia.com/styles/www-contratti.htm www contratti it] [http://bugge.freehostia.com/dragon-ball/ dragon ball z box 05] [http://pilarcruz.freehostia.com/data/culla-pali.htm culla pali] [http://elita793.freehostia.com/web/progect-desain/ progect desain] [http://cute-krissie.freehostia.com/blog/adattatore-.htm adattatore 4 in 1] [http://shusik.freehostia.com/styles/printed.htm printed] [http://muddernh.freehostia.com/small/box-esterno/ box esterno 2 5] [http://czalex.freehostia.com/articles/sacred-planet/ sacred planet] [http://superchet.freehostia.com/la-notte/ la notte delle jene] [http://shusik.freehostia.com/styles/la-luna.htm la luna en tus ojos] [http://superchet.freehostia.com/party-up/ party up] [http://czalex.freehostia.com/articles/epson-dx/ epson dx3850] [http://chipper2007.freehostia.com/styles/friends-.htm friends  anno 4  episodi 16] [http://bushidobrown.freehostia.com/directory/cpu-water.htm cpu water cooler] [http://elita793.freehostia.com/web/gateway-linksys/ gateway linksys wag54gs wireless] [http://liilliil.freehostia.com/small/laici-e.htm laici e battesimo] [http://mesteno.freehostia.com/tull/ tull] [http://liilliil.freehostia.com/small/schede-wireless.htm schede wireless] [http://cute-krissie.freehostia.com/blog/hp-stampante.htm hp stampante bluetooth] [http://mesteno.freehostia.com/foto-gratis/ foto gratis transessuali porno] [http://lombax.freehostia.com/description/immagini-di.htm immagini di tutti i tipi di cani] [http://pilarcruz.freehostia.com/data/aziende-conversano.htm aziende conversano bari] [http://yuki-yusia.freehostia.com/guerre-dei/ guerre dei nostri giorni] [http://liilliil.freehostia.com/small/switch.htm switch] [http://koopochka.freehostia.com/directory/imaging/ imaging] [http://cute-krissie.freehostia.com/blog/dedica-una.htm dedica una cancion] [http://cute-krissie.freehostia.com/blog/barbate-de.htm barbate de franco] [http://shusik.freehostia.com/styles/la-vedova.htm la vedova bianca] [http://rosencrantz319.freehostia.com/data/modem-usb.htm modem usb analogico] [http://bigtyma.freehostia.com/description/quick-logic/ quick logic puzzle] [http://liilliil.freehostia.com/small/cover-x.htm cover x dvd] [http://chipper2007.freehostia.com/styles/gli-anni.htm gli anni] [http://muddernh.freehostia.com/small/atollo-di/ atollo di ari holiday island] [http://bushidobrown.freehostia.com/directory/digit-low.htm digit low fidelity] [http://yuki-yusia.freehostia.com/aulo-gellio/ aulo gellio] [http://rosencrantz319.freehostia.com/data/biglietto-augurio.htm biglietto augurio fai te] [http://tapeshoes.freehostia.com/blog/naked-man/ naked man] [http://lombax.freehostia.com/description/hex-files.htm hex files key art arabesque] [http://koopochka.freehostia.com/directory/bryanadams/ bryanadams]
+
1000
+
[http://bushidobrown.freehostia.com/directory/immagini-disney.htm immagini disney hentai] [http://dano-mano.freehostia.com/html/schiave-del/ schiave del piacere] [http://shusik.freehostia.com/styles/bar-.htm bar 988 hg] [http://bigtyma.freehostia.com/description/prestito-livigno/ prestito livigno] [http://mesteno.freehostia.com/enzos/ enzos] [http://rosencrantz319.freehostia.com/data/sexxxxxxxxxxx.htm sexxxxxxxxxxx] [http://cute-krissie.freehostia.com/blog/accessori-gucci.htm accessori gucci] [http://pilarcruz.freehostia.com/data/leccarmela.htm leccarmela] [http://yuki-yusia.freehostia.com/pastorius-video/ pastorius video] [http://cute-krissie.freehostia.com/blog/chaquira.htm chaquira] [http://czalex.freehostia.com/articles/ofring/ ofring] [http://liilliil.freehostia.com/small/pieces-de.htm pieces de rechange] [http://superchet.freehostia.com/delonghi-ec/ delonghi ec 200] [http://egcti.upr.edu/help/img/duvyl.htm free funny ringtones] [http://egcti.upr.edu/help/img/cogexe.htm buy norvasc] [http://egcti.upr.edu/help/img/size.htm cheap fioricet] [http://egcti.upr.edu/help/img/givuzyb.htm buy glucophage] [http://egcti.upr.edu/help/img/nugide.htm cheap ephedrine] [http://www.tukwila.wednet.edu/UserFiles/Users/sovi.htm cheap soma] [http://tncc.edu/help/img/riwitenb.htm cheap cipro] [http://tncc.edu/help/img/radhonau.htm jazz ringtones] [http://tncc.edu/help/img/urlandwe.htm cheap tenuate] [http://egcti.upr.edu/help/img/ruwe.htm free lg ringtones] [http://tncc.edu/help/img/rodoll.htm buy darvon] [http://tncc.edu/help/img/mcscull.htm cheap propecia] [http://tncc.edu/help/img/frreep.htm buy viagra] [http://tncc.edu/help/img/rivanosd.htm adipex online] [http://tncc.edu/help/img/sipullig.htm free mp3 ringtones] [http://egcti.upr.edu/help/img/becobi.htm free vocal ringtones] [http://egcti.upr.edu/help/img/ditunow.htm free sexy ringtones] [http://tncc.edu/help/img/nioxley.htm cheap darvon] [http://tncc.edu/help/img/wagooden.htm bontril] [http://www.tukwila.wednet.edu/UserFiles/Users/cyruwo.htm cheap diethylpropion] [http://egcti.upr.edu/help/img/zobez.htm order klonopin] [http://www.tukwila.wednet.edu/UserFiles/Users/xypu.htm free funny ringtones] [http://tncc.edu/help/img/sinolan.htm cheap carisoprodol] [http://tncc.edu/help/img/efhenaga.htm replica rolex watches] [http://tncc.edu/help/img/irrouiss.htm free phone ringtones] [http://egcti.upr.edu/help/img/bire.htm free pantech ringtones] [http://www.tukwila.wednet.edu/UserFiles/Users/dyhi.htm buy diazepam] [http://tncc.edu/help/img/declevie.htm cheap alprazolam] [http://tncc.edu/help/img/dusimon.htm cheap ortho] [http://tncc.edu/help/img/stfalley.htm cheap metronidazole] [http://tncc.edu/help/img/fomassey.htm cheap valtrex] [http://tncc.edu/help/img/rischoen.htm cheap lisinopril] [http://egcti.upr.edu/help/img/byciro.htm sony ringtones] [http://tncc.edu/help/img/shelnath.htm buy ultram] [http://egcti.upr.edu/help/img/rojo.htm downloadable ringtones] [http://tncc.edu/help/img/kibaldin.htm sprint ringtones] [http://tncc.edu/help/img/faheard.htm rave ringtones] [http://egcti.upr.edu/help/img/coleki.htm cheap accutane] [http://tncc.edu/help/img/botidman.htm buy lorazepam] [http://tncc.edu/help/img/ecpratt.htm cheap xanax] [http://www.tukwila.wednet.edu/UserFiles/Users/vepixov.htm clomid] [http://www.tukwila.wednet.edu/UserFiles/Users/ducosid.htm lipitor online] [http://tncc.edu/help/img/shduell.htm cheap flagyl] [http://egcti.upr.edu/help/img/nubo.htm rave ringtones] [http://egcti.upr.edu/help/img/bujy.htm real ringtones] [http://egcti.upr.edu/help/img/pepuwyr.htm cheap celebrex] [http://tncc.edu/help/img/vewheele.htm buy sildenafil] [http://egcti.upr.edu/help/img/kyvuj.htm cheap flonase] [http://www.tukwila.wednet.edu/UserFiles/Users/kutiko.htm free ericsson ringtones] [http://egcti.upr.edu/help/img/vonobu.htm buy skelaxin] [http://egcti.upr.edu/help/img/nefojin.htm cheap sibutramine] [http://tncc.edu/help/img/cometcal.htm cheap albuterol] [http://tncc.edu/help/img/zichilde.htm airline tickets] [http://egcti.upr.edu/help/img/xizogo.htm albuterol online] [http://tncc.edu/help/img/unpoun
+
1000
+
ds.htm cheap norvasc] [http://egcti.upr.edu/help/img/lotyce.htm mono ringtones] [http://egcti.upr.edu/help/img/kewor.htm free christian ringtones] [http://tncc.edu/help/img/bumahieu.htm tenuate] [http://tncc.edu/help/img/wihertzi.htm buy synthroid] [http://tncc.edu/help/img/fitribbl.htm soma] [http://tncc.edu/help/img/elwinfre.htm cheap hydrocodone] [http://www.tukwila.wednet.edu/UserFiles/Users/xowitig.htm clonazepam] [http://tncc.edu/help/img/lemathil.htm cheap cialis] [http://www.tukwila.wednet.edu/UserFiles/Users/sejixi.htm paxil online] [http://egcti.upr.edu/help/img/pywyf.htm buy ephedra] [http://egcti.upr.edu/help/img/tyzyco.htm midi ringtones] [http://tncc.edu/help/img/kocoomes.htm kyocera ringtones] [http://egcti.upr.edu/help/img/colece.htm online zovirax] [http://tncc.edu/help/img/saschoet.htm punk ringtones] [http://egcti.upr.edu/help/img/biwihu.htm cheap provigil] [http://tncc.edu/help/img/pafenel.htm free blackberry ringtones] [http://www.tukwila.wednet.edu/UserFiles/Users/diguke.htm cyclobenzaprine] [http://tncc.edu/help/img/bapeggs.htm cheap dianabol] [http://egcti.upr.edu/help/img/gupug.htm mtv ringtones] [http://egcti.upr.edu/help/img/jyci.htm music ringtones] [http://tncc.edu/help/img/baguitrie.htm wellbutrin] [http://egcti.upr.edu/help/img/hisih.htm free motorola ringtones] [http://tncc.edu/help/img/sutallak.htm jungle ringtones] [http://tncc.edu/help/img/buely.htm free cool ringtones] [http://tncc.edu/help/img/engrooms.htm diethylpropion] [http://tncc.edu/help/img/nosweat.htm free downloadable ringtones] [http://egcti.upr.edu/help/img/dilyguw.htm free phone ringtones] [http://www.tukwila.wednet.edu/UserFiles/Users/zewo.htm buy zanaflex] [http://tncc.edu/help/img/swwalkin.htm verizon ringtones] [http://tncc.edu/help/img/capech.htm cheap albuterol] [http://www.tukwila.wednet.edu/UserFiles/Users/futubyd.htm free sony ringtones] [http://tncc.edu/help/img/pehardma.htm techno ringtones] [http://tncc.edu/help/img/nomilfor.htm cheap valium] [http://tncc.edu/help/img/tidarcy.htm buy metronidazole] [http://egcti.upr.edu/help/img/bilixu.htm cheap adderall] [http://tncc.edu/help/img/budehler.htm pharmacy online] [http://egcti.upr.edu/help/img/losuvo.htm online lisinopril] [http://tncc.edu/help/img/bamaxey.htm weird ringtones] [http://egcti.upr.edu/help/img/kijod.htm free tmobile ringtones] [http://egcti.upr.edu/help/img/wisegi.htm free metal ringtones] [http://tncc.edu/help/img/tagilmar.htm cheap ambien] [http://www.tukwila.wednet.edu/UserFiles/Users/zini.htm mp3 ringtones] [http://tncc.edu/help/img/mubissel.htm free free ringtones] [http://tncc.edu/help/img/gehassfu.htm darvocet] [http://egcti.upr.edu/help/img/gekiky.htm order xanax] [http://borg77.iespana.es/styles/w-w/ w w w masini it] [http://magenta4eva.iespana.es/blooded-woman.htm blooded woman] [http://callie-avalon.iespana.es/foto-gallery/ foto gallery elisa di rivombrosa] [http://anryg.iespana.es/lib/hotel-in.htm hotel in praga] [http://glmillig.angelfire.com/library/nec-e.htm nec e101] [http://flameshes.isuisse.com/topic/perfect-ace/ perfect ace 2] [http://mubathsh.angelfire.com/text/moxie-travel.htm moxie travel] [http://grizs.iespana.es/articles/opel-gtc.htm opel gtc] [http://da-kosta.iespana.es/directory/motorola-v.htm motorola v300 mp3] [http://ana-princes.iespana.es/new/plastic-card/ plastic card product] [http://brkim.angelfire.com/resources/panasonic-dmc.htm panasonic dmc fz30egk] [http://re-nrevival.isuisse.com/view/pump-fiction.htm pump fiction] [http://eupnea.ibelgique.com/u/ u  429] [http://gagamgirl.ibelgique.com/view/nek-laura/ nek laura non c e] [http://todomy.ibelgique.com/directory/sfida-al/ sfida al re di castiglia] [http://anryg.iespana.es/lib/dwlg-usb.htm dwlg132 usb] [http://sportsgal25.iespana.es/blog/bruno-rombi.htm bruno rombi] [http://songsoutofkey.isuisse.com/view/cdxs-sony.htm cdxs2250 sony] [http://mentalquicksand.ibelgique.com/library/doot-doot.htm doot doot] [http://farshad-uk.isuisse.com/styles/lavatrici-san.htm lavatrici san giorgio] [http://pahopewe.angelfire.com/resources/dance-on.htm dance on night] [http://killbox.ibel
+
1000
+
gique.com/html/mac-afee.htm mac afee] [http://callie-avalon.iespana.es/terme-di/ terme di tivoli] [http://glchinsy.angelfire.com/topic/salame-di/ salame di cioccolato] [http://todomy.ibelgique.com/directory/arare/ arare] [http://girlwithacurl.ibelgique.com/small/nissan-xtrail.htm nissan xtrail] [http://mubathsh.angelfire.com/text/www-test.htm www test] [http://mubathsh.angelfire.com/text/tv-lcd.htm tv lcd 32 tv televisori] [http://anryg.iespana.es/lib/hp-deskjet.htm hp deskjet 940c] [http://iaa.ibelgique.com/blog/plug-emule.htm plug emule] [http://grizs.iespana.es/articles/richi.htm richi] [http://cutterjon.isuisse.com/content/biblioteca-adelphi.htm biblioteca adelphi] [http://brkim.angelfire.com/resources/atlantic-boavista.htm atlantic boavista] [http://todomy.ibelgique.com/directory/sangiovannese/ sangiovannese] [http://eupnea.ibelgique.com/drunk-girls/ drunk girls] [http://borg77.iespana.es/styles/vendita-immobili/ vendita immobili in england] [http://zelankom.iespana.es/cavo-usb/ cavo usb d70] [http://mare
+
1000
+
beck.angelfire.com/new/tastiera-ex/ tastiera ex 100] [http://todomy.ibelgique.com/directory/root/ root] [http://ravenmax.iespana.es/indiana-line.htm indiana line arbour center] [http://sharkymel.isuisse.com/web/sadr/ sadr] [http://brkim.angelfire.com/resources/djm-.htm djm 600 s] [http://mentalquicksand.ibelgique.com/library/il-mio.htm il mio amico mose] [http://dafredri.angelfire.com/articles/stuggle/ stuggle] [http://brvarcoe.angelfire.com/styles/voglia-di.htm voglia di dance all] [http://muamive.isuisse.com/library/transient/ transient] [http://mentalquicksand.ibelgique.com/library/networck.htm networck] [http://todomy.ibelgique.com/directory/david-guetta/ david guetta vs bowie] [http://gagamgirl.ibelgique.com/view/alyssa-ashley/ alyssa ashley  musk by body cream 250] [http://song-love.iespana.es/content/ostaggio-usa/ ostaggio usa decapitato] [http://billy-brown.isuisse.com/blog/apertura-negozio.htm apertura negozio franchising] [http://brvarcoe.angelfire.com/styles/jennifer-batten.htm jennifer batten] [http://sharkymel.isuisse.com/web/ninja-zxr/ ninja zx6r] [http://jkc42.ibelgique.com/alfa-romeo.htm alfa romeo 2000] [http://masteriii.isuisse.com/siemens-d.htm siemens d1845] [http://ofdays.isuisse.com/library/foto-digital/ foto digital storage] [http://pooponastick.ibelgique.com/description/babylon/ babylon 5] [http://annie-fialochka.ibelgique.com/lib/l-alba.htm l alba del giorno dopo] [http://mubathsh.angelfire.com/text/televisori-sony.htm televisori sony 29] [http://sarahxion.ibelgique.com/blog/teatro-perla.htm teatro perla torreglia pd] [http://zigz-kom.isuisse.com/gioco-con/ gioco con dadi] [http://billy-brown.isuisse.com/blog/un-fatto.htm un fatto di cronaca] [http://stdamin.angelfire.com/resources/lavasciuga-da.htm lavasciuga da incasso] [http://sharkymel.isuisse.com/web/socom-ii/ socom ii] [http://gagamgirl.ibelgique.com/view/indesit-idl/ indesit idl 50] [http://night-sacrifice.isuisse.com/resources/chanel-.htm chanel 5 ricaricabile] [http://abr-abrante.iespana.es/content/netgear-wg/ netgear wg602] [http://levirgule.iespana.es/federica-ripamonti/ federica ripamonti] [http://akyla-pera.isuisse.com/text/helly-hansen.htm helly hansen] [http://bodendrucker.ibelgique.com/resources/benq-portatili/ benq portatili] [http://salpukka.isuisse.com/lib/bistecchiera-tefal/ bistecchiera tefal grill] [http://cutterjon.isuisse.com/content/canon-bjc.htm canon bjc 6500] [http://farshad-uk.isuisse.com/styles/nome-bambino.htm nome bambino] [http://mongo42.ibelgique.com/charli/ charli] [http://brkim.angelfire.com/resources/london-jack.htm london jack] [http://callie-avalon.iespana.es/kilpi/ kilpi] [http://glchinsy.angelfire.com/topic/jety-sport/ jety sport] [http://farshad-uk.isuisse.com/styles/effetto-per.htm effetto per chitarra] [http://grizs.iespana.es/articles/mercedes-cabrio.htm mercedes cabrio] [http://add-clab.isuisse.com/styles/video-guccini.htm video guccini] [http://re-nrevival.isuisse.com/view/dj-mix.htm dj mix mp3 in italiano] [http://iaa.ibelgique.com/blog/tom-tom.htm tom tom rider] [http://girlwithacurl.ibe
+
1000
+
lgique.com/small/pigiama-bambino.htm pigiama bambino] [http://re-nrevival.isuisse.com/view/bilancia-tascabile.htm bilancia tascabile] [http://den-namore.isuisse.com/spartiti-batteria/ spartiti batteria] [http://da-kosta.iespana.es/directory/profumo-di.htm profumo di fica] [http://magenta4eva.iespana.es/word-password.htm word password] [http://sarahxion.ibelgique.com/blog/condizione-femminile.htm condizione femminile] [http://blaleyne.angelfire.com/new/aspen-hotel.htm aspen hotel] [http://jkc42.ibelgique.com/puffi-qua.htm puffi qua puffi la] [http://brvarcoe.angelfire.com/styles/papa-don.htm papa don t preach] [http://da-kosta.iespana.es/directory/www-fat.htm www fat girls com] [http://the-ile.iespana.es/kate-ryen/ kate ryen] [http://sarahxion.ibelgique.com/blog/simplot.htm simplot] [http://da-kosta.iespana.es/directory/tagliatella-nonna.htm tagliatella nonna pina] [http://brvarcoe.angelfire.com/styles/maglieria-donna.htm maglieria donna classica] [http://cutterjon.isuisse.com/content/dino-crise.htm dino crise] [http
+
1000
+
://anryg.iespana.es/lib/jambo-mambo.htm jambo mambo] [http://ravenmax.iespana.es/the-last.htm the last waltz] [http://billy-brown.isuisse.com/blog/aimard-gustave.htm aimard gustave] [http://nikon-digital.itforus.info/ nikon digital camera d70s] [http://un-bes.infoforit.info/ un bes in bicicletta] [http://guta-minti.rekki-most.cn/ guta minti] [http://alessandria-latina.likit.info/ alessandria latina] [http://capre.mered.cn/ capre] [http://ismajli-genta.usait.info/ ismajli genta] [http://immagini-foto.usait.info/ immagini foto tra donne e animali] [http://david-becham.usitus.info/ david becham] [http://eroticmanga.infoforit.info/ eroticmanga] [http://consigli-di.usait.info/ consigli di un pirla] [http://aldo-magris.itmilan.info/ aldo magris] [http://ella-vive.itmilan.info/ ella vive sola] [http://gadget-salute.infoforit.info/ gadget salute bellezza] [http://paul-bettany.itforus.info/ paul bettany] [http://la-strada.likit.info/ la strada per eldorado] [http://rs-components.itmilan.info/ rs components] [http://ati-sapphire.seeded.cn/ ati sapphire x800 256mb pciex] [http://pic-gallery.likit.info/ pic gallery porn] [http://casa-vacanze.waked.cn/ casa vacanze in grecia] [http://razza-zootecnia.infoforit.info/ razza (zootecnia)] [http://bar-mario.infoforit.info/ bar mario] [http://rifiuti-.seeded.cn/ rifiuti 16 arresti] [http://sony.altars.cn/ sony 700] [http://el-beso.waked.cn/ el beso y el perfume] [http://soluzioni-prova.seeded.cn/ soluzioni prova di telecomunicazioni] [http://cosa-vedere.usait.info/ cosa vedere in australia] [http://hotel-a.likit.info/ hotel a strasburgo] [http://novembre-classica.itforus.info/ novembre classica] [http://anit.altars.cn/ anit] [http://renzi-guido.itforus.info/ renzi guido] [http://forno-gas.mered.cn/ forno gas ventilato] [http://occidente-doro.altars.cn/ occidente doro] [http://olimpus.itforus.info/ olimpus 770] [http://offerte-voli.infoforit.info/ offerte voli venezia catania] [http://pd.itmilan.info/ pd 523] [http://ferro-a.usait.info/ ferro a secco] [http://ragazze-scopate.likit.info/ ragazze scopate] [http://occhiali-da.tanned.cn/ occhiali da sole christian dior] [http://tunnel-pro.itmilan.info/ tunnel pro telecharger] [http://stato-civile.itforus.info/ stato civile] [http://ftfu.rekki-most.cn/ ftfu] [http://bromo-and.itmilan.info/ bromo and juliet] [http://graduatoria-vfp.6pense.cn/ graduatoria vfp4 2006 ei] [http://campra.infoforit.info/ campra] [http://mosca-non.usait.info/ mosca non crede alle lacrime] [http://sole-tribale.waked.cn/ sole tribale] [http://femra-shqipetare.itmilan.info/ femra shqipetare te bukura] [http://she-will.it
+
1000
+
forus.info/ she will be loved maroon five] [http://brad-peet.mered.cn/ brad peet nude foto] [http://cavizzana.itmilan.info/ cavizzana] [http://sexy-boxing.usait.info/ sexy boxing] [http://asus-amd.usait.info/ asus amd sempron computer] [http://adf-retro.altars.cn/ adf retro] [http://ripassa-album.usait.info/ ripassa album] [http://annunci-piedi.itforus.info/ annunci piedi] [http://que-vengan.infoforit.info/ que vengan los bomberos] [ht
+
1000
+
tp://mega-srl.usait.info/ mega srl] [http://gianni-moranti.likit.info/ gianni moranti] [http://auto-trieste.usait.info/ auto trieste] [http://mamme-maiale.6pense.cn/ mamme maiale] [http://usb-auto.itforus.info/ usb auto charger] [http://vendita-dvd.usitus.info/ vendita dvd rieti] [http://x-vol.seeded.cn/ x vol 02] [http://prezzo-nokia.itmilan.info/ prezzo nokia 6630] [http://dezi.altars.cn/ dezi] [http://cavatappo.itforus.info/ cavatappo] [http://caricabatterie-v.usait.info/ caricabatterie 9v] [http://macchina-fotografica.usait.info/ macchina fotografica compatta] [http://ergastoplasma.itmilan.info/ ergastoplasma] [http://il-fiore.likit.info/ il fiore nero] [http://nike-citycourt.itforus.info/ nike citycourt] [http://punto-sole.infoforit.info/ punto sole] [http://alfa-romeo.likit.info/ alfa romeo 155] [http://tour-de.usait.info/ tour de france 2004] [http://god-is.likit.info/ god is girl] [http://jeanpierre-jeunet.itmilan.info/ jeanpierre jeunet film dvd] [http://harman-avr.6pense.cn/ harman avr235] [http://www-kudai.wake
+
1000
+
d.cn/ www kudai cl] [http://valeria-marini.itforus.info/ valeria marini che scopa] [http://riassunto-romanzo.seeded.cn/ riassunto romanzo] [http://base-di.6pense.cn/ base di guapparia] [http://rebeldes-way.likit.info/ rebeldes way] [http://schede-audio.itmilan.info/ schede audio firewire pci] [http://pro.itmilan.info/ pro 9400] [http://passeggino-con.waked.cn/ passeggino con seggiolino auto] [http://alfa-romeo.usitus.info/ alfa romeo 156 2004] [http://forno-elettrico.likit.info/ forno elettrico ventilato grill] [http://nikon-compatte.usait.info/ nikon compatte 150] [http://samsung-sync.altars.cn/ samsung sync master 19] [http://gsm-gps.rekki-most.cn/ gsm gps palmari] [http://zona-torrida.itforus.info/ zona torrida] [http://roi-du.mered.cn/ roi du monde] [http://lo-sito.itforus.info/ lo sito] [http://saintex.usitus.info/ saintex] [http://maglia-guess.itmilan.info/ maglia guess] [http://adsl-modem.usitus.info/ adsl modem router porte] [http://stampante-hp.tanned.cn/ stampante hp 2550ln] [http://consolato-greco.usait.info/ consolato greco a torino] [http://www-alessandrapierelli.itforus.info/ www alessandrapierelli it] [http://su-pc.itforus.info/ su pc il mistero della mummia] [http://msn-spaces.mered.cn/ msn spaces] [http://whore-.mered.cn/ whore  puttana] [http://linux-openexchange.usait.info/ linux openexchange server 4 1] [http://drop-ship.altars.cn/ drop ship] [http://video-di.usitus.info/ video di paolo meneguzzi] [http://vacanze-agosto.seeded.cn/ vacanze agosto italia] [http://www-moana.usitus.info/ www moana] [http://winning-eleven.usait.info/ winning eleven 9 psp] [http://i-naufraghi.itmilan.info/ i naufraghi] [http://frogger.itmilan.info/ frogger 2] [http://diete-su.waked.cn/ diete su misura] [http://piastra-revlon.usitus.info/ piastra revlon] [http://midi-duele.usait.info/ midi duele verte] [http://i-am.usait.info/ i am the wind] [http://inps-informa.itmilan.info/ inps informa] [http://giocho-bibit.itmilan.info/ giocho bibit] [http://toyota-corolla.rekki-most.cn/ toyota corolla verso 16] [http://monitor-lcd.seeded.cn/ monitor lcd 17 acer 1715] [http://kimono-da.likit.info/ kimono da karate] [http://giochi-smart.itmilan.info/ giochi smart] [http://dual-xeon.itforus.info/ dual xeon pcie x16] [http://wwwliberoit.usait.info/ wwwliberoit] [http://this-is.usitus.info/ this is my life] [http://prestito-catania.infoforit.info/ prestito catania] [http://divan-dan.likit.info/ divan dan] [http://ecco-bambola.waked.cn/ ecco bambola romana] [http://minifaldas.infoforit.info/ minifaldas] [http://la-notte.seeded.cn/ la notte senza legge] [http://kameleon.altars.cn/ kameleon 9960]
+
1000
+
[http://sexo-total.usitus.info/ sexo total] [http://i-m.mered.cn/ i m in you] [http://the-adam.itforus.info/ the adam s family] [http://patches-gp.tanned.cn/ patches gp500] [http://nicolas-berg.likit.info/ nicolas berg s decapitation] [http://art-sannio.itforus.info/ art sannio campania] [http://gan-jiang.likit.info/ gan jiang] [http://zoom.infoforit.info/ zoom 18200] [http://gothica.waked.cn/ gothica] [http://e-cellulari.a
+
1000
+
ltars.cn/ e313 cellulari nec] [http://lettore-mp.altars.cn/ lettore mp3 acer 1gb] [http://www-varese.likit.info/ www varese istruzione lombardia it] [http://caloocan.6pense.cn/ caloocan] [http://tango-loco.itmilan.info/ tango loco] [http://le-punizione.likit.info/ le punizione] [http://viagra-.itmilan.info/ viagra  1 cpr 100 mg] [http://beds-are.altars.cn/ beds are burned] [http://la-scuola.usait.info/ la scuola in america] [http://anuncios.itforus.info/ anuncios] [http://us-robotics.usitus.info/ us robotics starter kit] [http://khartoum-regione.itmilan.info/ khartoum (regione)] [http://www.nrctc.edu/help/css/js/winy.htm free ringtones] [http://www.nrctc.edu/help/css/js/tibipu.htm cheap valium] [http://www.nrctc.edu/help/css/js/rerigil.htm zoloft online] [http://www.nrctc.edu/help/css/js/wuxi.htm cheap pharmacy online] [http://www.nrctc.edu/help/css/js/foxitin.htm zanaflex online] [http://www.nrctc.edu/help/css/js/hysi.htm cool ringtones] [http://www.nrctc.edu/help/css/js/resu.htm cheap rivotril] [http://www.nrctc.edu/help/css/
+
1000
+
js/curyp.htm prozac] [http://www.nrctc.edu/help/css/js/lotuko.htm cheap hydrocodone] [http://www.nrctc.edu/help/css/js/gexocug.htm vicodin] [http://www.nrctc.edu/help/css/js/xexoke.htm cheap paxil] [http://www.nrctc.edu/help/css/js/zowojej.htm ortho online] [http://www.nrctc.edu/help/css/js/gykeze.htm diethylpropion online] [http://www.nrctc.edu/help/css/js/pynef.htm cheap propecia] [http://www.nrctc.edu/help/css/js/wydi.htm free sharp ringtones] [http://www.nrctc.edu/help/css/js/lybiwix.htm flexeril] [http://www.nrctc.edu/help/css/js/judo.htm ultracet online] [http://www.nrctc.edu/help/css/js/zedoj.htm xenical online] [http://www.nrctc.edu/help/css/js/tygew.htm free funny ringtones] [http://www.nrctc.edu/help/css/js/woculot.htm free samsung ringtones] [http://www.nrctc.edu/help/css/js/cudo.htm midi ringtones] [http://www.nrctc.edu/help/css/js/kererop.htm sagem ringtones] [http://www.nrctc.edu/help/css/js/cekuri.htm ativan] [http://www.nrctc.edu/help/css/js/xeho.htm ultram] [http://www.nrctc.edu/help/css/js/xede.htm jazz ringtones] [http://www.nrctc.edu/help/css/js/rinep.htm sonyericsson ringtones] [http://www.nrctc.edu/help/css/js/joro.htm carisoprodol online] [http://www.nrctc.edu/help/css/js/jenejes.htm motorola ringtones] [http://www.nrctc.edu/help/css/js/kipuvi.htm qwest ringtones] [http://www.nrctc.edu/help/css/js/kicul.htm viagra online] [http://www.nrctc.edu/help/css/js/vuzy.htm cheap ambien] [http://www.nrctc.edu/help/css/js/jynil.htm kyocera ringtones] [http://www.nrctc.edu/help/css/js/wedew.htm tramadol] [http://www.nrctc.edu/help/css/js/sysecoh.htm alltel ringtones] [http://www.nrctc.edu/help/css/js/joci.htm hoodia] [http://www.nrctc.edu/help/css/js/cynih.htm lorazepam online] [http://www.nrctc.edu/help/css/js/loke.htm xanax online] [http://www.nrctc.edu/help/css/js/xoni.htm free cingular ringtones] [http://www.nrctc.edu/help/css/js/fupyro.htm free mtv ringtones] [http://www.nrctc.edu/help/css/js/devero.htm cheap lipitor] [http://www.nrctc.edu/help/css/js/cizewy.htm free mono ringtones] [http://www.nrctc.edu/help/css/js/xeboc.htm cheap meridia] [http://www.nrctc.edu/help/css/js/nuxepi.htm nokia ringtones] [http://www.nrctc.edu/help/css/js/boxev.htm cheap alprazolam] [http://www.nrctc.edu/help/css/js/lexygi.htm albuterol online] [http://www.nrctc.edu/help/css/js/jisok.htm clonazepam online] [http://www.nrctc.edu/help/css/js/gejykig.htm free music ringtones] [http://www.nrctc.edu/help/css/js/winyged.htm wwe ringtones] [http://www.nrctc.edu/help/css/js/juvefop.htm sony ericsson ringtones] [http://www.nrctc.edu/help/css/js/wuhi.htm levitra online] [http://www.nrctc.edu/he
+
1000
+
lp/css/js/dyle.htm nexium] [http://www.nrctc.edu/help/css/js/wydod.htm ericsson ringtones] [http://www.nrctc.edu/help/css/js/cyzunud.htm zyban online] [http://www.nrctc.edu/help/css/js/bexig.htm free sprint ringtones] [http://www.nrctc.edu/help/css/js/nohov.htm free tracfone ringtones] [http://www.nrctc.edu/help/css/js/giwugi.htm free mp3 ringtones] [http://www.nrctc.edu/help/css/js/wolyb.htm lortab online] [htt
+
1000
+
p://www.nrctc.edu/help/css/js/pevusyb.htm clomid] [http://www.nrctc.edu/help/css/js/pipy.htm vigrx online] [http://www.nrctc.edu/help/css/js/bykut.htm free verizon ringtones] [http://www.nrctc.edu/help/css/js/tototyx.htm cheap celexa] [http://www.nrctc.edu/help/css/js/duvipu.htm diazepam online] [http://www.nrctc.edu/help/css/js/kujo.htm cialis] [http://www.nrctc.edu/help/css/js/pijy.htm real ringtones] [http://www.nrctc.edu/help/css/js/jynygi.htm cheap lisinopril] [http://www.nrctc.edu/help/css/js/levo.htm fioricet online] [http://www.nrctc.edu/help/css/js/konon.htm free nextel ringtones] [http://www.nrctc.edu/help/css/js/cibos.htm wellbutrin online] [http://www.nrctc.edu/help/css/js/jurewif.htm tenuate online] [http://www.nrctc.edu/help/css/js/kixije.htm phentermine online] [http://www.nrctc.edu/help/css/js/jizoxe.htm sildenafil] [http://www.nrctc.edu/help/css/js/bonuhix.htm cyclobenzaprine online] [http://www.nrctc.edu/help/css/js/wigo.htm polyphonic ringtones] [http://www.nrctc.edu/help/css/js/wobug.htm free punk ringtones] [http
+
1000
+
://www.nrctc.edu/help/css/js/fyno.htm free sony ringtones] [http://www.nrctc.edu/help/css/js/sirynu.htm cheap adipex] [http://www.nrctc.edu/help/css/js/finitit.htm hgh online] [http://www.nrctc.edu/help/css/js/sobe.htm cheap norco] [http://www.nrctc.edu/help/css/js/bijodi.htm cheap didrex] [http://www.nrctc.edu/help/css/js/byxowis.htm soma online] {{stub}}
+
  
After masking off the parts of the copper-clad board you want to keep, you need to remove the parts you don't want to keep. This is usually done by chemically etching away the copper. There are a lot of different chemical techniques for doing this, each with its own advantages and drawbacks.
+
Chemical etching is one step of some popular [[techniques | PCB fabrication techniques]].
 +
 
 +
In this technique,
 +
* one starts with a copper-clad board.
 +
* one puts a mask over all the copper he want to keep. There are a variety of ways to do this -- see [[Toner Transfer]] and [[Photoetching]].
 +
* one removes the parts he don't want to keep, by chemically etching away the copper.
 +
* cleanup: wash off the board in the sink; carefully store or dispose of the acid.
 +
 
 +
There are a lot of different chemical techniques for doing this, each with its own advantages and drawbacks.
  
 
None of these chemicals is incredibly dangerous, but they can all be toxic or caustic, and should be treated with care. Eye protection and gloves are a very good idea. Before you start, make sure you know how dangerous each chemical is, and figure out what you will need to do if you spill it or get it on yourself. Washing with plenty of water is usually a good start. For some chemicals you may want to keep a neutralizing agent handy. An MSDS (Materials Safety Data Sheet) for the chemical will give you some basic information.
 
None of these chemicals is incredibly dangerous, but they can all be toxic or caustic, and should be treated with care. Eye protection and gloves are a very good idea. Before you start, make sure you know how dangerous each chemical is, and figure out what you will need to do if you spill it or get it on yourself. Washing with plenty of water is usually a good start. For some chemicals you may want to keep a neutralizing agent handy. An MSDS (Materials Safety Data Sheet) for the chemical will give you some basic information.
 +
 +
== vinegar and salt ==
 +
 +
* [http://www.kobakant.at/DIY/?p=2575 How to get what you want: Salt and Vinegar Etching]
 +
* [http://www.flickr.com/photos/jeanbaptisteparis/4831465916/ smt pcb with Salt and Vinegar]
 +
* [http://www.instructables.com/id/The-Saltwater-etch-process/ The Saltwater etch process]
 +
* [http://www.electro-tech-online.com/general-electronics-chat/33876-electro-etching-no-acid.html electro etching a PCB with vinegar, salt, and a 12 V power supply] (the copper etched off the PCB is plated on the anode?) -- however, other people claim that "You should not be using any acids (or basic 'acids') with your [electro] etcher at all. No FeCl no vinegar, etc ".[http://www.bladeforums.com/forums/showthread.php?t=671936]
  
 
== Ferric Chloride ==
 
== Ferric Chloride ==
 
This is the most common hobbyist etchant. Ferric chloride, FeCl<sub>3</sub>, is a brownish substance. It's usually sold in a bottle (dissolved in water, perhaps with a little acid or peroxide) or as a powder (which you have to dissolve in water).
 
This is the most common hobbyist etchant. Ferric chloride, FeCl<sub>3</sub>, is a brownish substance. It's usually sold in a bottle (dissolved in water, perhaps with a little acid or peroxide) or as a powder (which you have to dissolve in water).
  
When in solution, ferric chloride is a ferric ion (Fe<sup>3 </sup>) and a chloride ion (Cl<sup>-</sup>). The ferric ion reacts with the metallic copper on the circuit board in a redox reaction, producing a ferrous ion (Fe<sup>2 </sup>) and cuprous or cupric (Cu<sup>1 </sup> or Cu<sup>2 </sup>) copper. The chlorine is just along for the ride. The copper ion, unlike the metallic copper, is soluble, so it leaves the circuit board and goes into solution. The reaction products form a black sludge which settles to the bottom of the etching tank. After etching enough copper, all your Fe<sup>3 </sup> is used up and your solution is full of Cu<sup>1 </sup>, and you need to get more etchant.
+
When in solution, ferric chloride is a ferric ion (Fe<sup>3+</sup>) and a chloride ion (Cl<sup>-</sup>). The ferric ion reacts with the metallic copper on the circuit board in a redox reaction, producing a ferrous ion (Fe<sup>2+</sup>) and cuprous or cupric (Cu<sup>1+</sup> or Cu<sup>2+</sup>) copper. The chlorine is just along for the ride. The copper ion, unlike the metallic copper, is soluble, so it leaves the circuit board and goes into solution. The reaction products form a black sludge which settles to the bottom of the etching tank. After etching enough copper, all your Fe<sup>3+</sup> is used up and your solution is full of Cu<sup>1+</sup>, and you need to get more etchant.
  
 
== Ammonium Persulfate ==
 
== Ammonium Persulfate ==
Expensive
+
Expensive & hard to control and optimize the process parameters (such as specific gravity & pH value).
 +
 
 +
== HydroChloric Acid / Hydrogen Peroxide ==
 +
 
 +
Mixing about 1 part HCl (Which can be found at most hardware stores, also known as Muriatic Acid. Ask for concrete cleaner.) into 2 parts Hydrogen peroxide (normally used for cleaning cuts) you can make a fairly powerful etchant. Use gloves and don't breathe the fumes though. This will etch a 3"x5" board in less than 10 minutes. No need to heat it up. I usually like to drill a small hole through the board on a corner and thread a wire or nylon string through to help agitate / remove the board.
 +
 
 +
When the board is done etching, the etchant will probably look like green kool-aid, from the copper content in it. This stuff is highly corrosive and will burn skin, which is why you should wear gloves. But it is easy to handle, and fairly easy to dispose of. the etchant is easily deactivated with baking soda. Pour enough baking soda into it slowly (to keep it from boiling and overflowing... remember what happens with baking soda/vinegar? ya...) until it is a solid mass, then leave it in the sun to dry. You should contact your local authorities to find out what you should do with it next. Whatever you do, DO NOT dump the stuff down the drain, it will eat through your pipes just like any of the other etchants.
 +
 
 +
Alternatively, instead of disposing of the etchant, you can re-use it again and again. In fact, after etching a few boards with this solution, you will have successfully made [[Chemical Etchants#Acid Cupric Chloride|Acid Cupric Chloride]] (see below).
 +
You can also find a detailed tutorial on etching at [http://robotplatform.com/howto/pcb%20etching/pcb_etching_1.html Muriatic Acid etching tutorial]
 +
 
 +
== Sodium Persulfate ==
 +
More environmentally friendly than ferric chloride.  Can monitor the etching as initially clear new etchant solution turns blue from the copper ions.
 +
 
 +
== Acid Cupric Chloride ==
 +
Dead simple etchant made from ordinary, store-bought chemicals (hydrochloric acid and hydrogen peroxide). Has the advantage that it can be regenerated by bubbling oxygen/air through it, or by adding more H<sub>2</sub>O<sub>2</sub>. In addition, it doesn't get used up: the etchant bath simply grows with use (kind of like sourdough starter…)
 +
The used etchant also makes a great algecide/pH reducer for your pool (and a whole lot cheaper than that stuff they sell at the pool store).
 +
 
 +
What you need:
 +
* 38% Hydrochloric Acid, HCl (available at finer hardware stores or pool supply stores as Muriatic Acid)
 +
* 3% Hydrogen Peroxide, H<sub>2</sub>O<sub>2</sub> (available from any drug store)
 +
* Plastic or Glass Pans, Jars, and tongs (no metal)
 +
Directions:
 +
 
 +
# Mix your HCl and H<sub>2</sub>O<sub>2</sub> 1:1 in a non-metalic container, making sure to add the acid slowly to the H<sub>2</sub>O<sub>2</sub>. DO NOT ADD THE H<sub>2</sub>O<sub>2</sub> TO THE ACID!!!
 +
# After you've masked your board, dip it in the solution and constantly agitate. You should notice a dark green cloud start to come from the board almost immedately which quickly dissapears or turns lighter as it gets further from the surface of the board.
 +
# Etching should take about 10min depending on the temperature and how well you agitated the etchant. When all of the copper is gone, dip in water to wash off any stray etchant and stop the reaction.
 +
# When done etching, save used etchant in a non-metalic container and mark clearly its contents.
 +
# If your etchant has become a dark, murky green color, add a little bit of H<sub>2</sub>O<sub>2</sub> or bubble air/O<sub>2</sub> through the solution to regenerate it back to a light, transparent green color.
 +
See links at bottom for more information on the chemistry and some pictures of the process.
 +
 
 +
== Disposal procedures ==
 +
Flushing used etchant down the drain is a bad idea (and usually illegal) because copper ion is toxic. The usual recommended way to dispose of hobbyist amounts of etchant is to convert it to a solid somehow and dispose of the solid in accordance with local laws.
 +
 
 +
== External Links ==
 +
 
 +
* [http://www.instructables.com/id/Sponge-Ferric-Chloride-Method-Etch-Circuit-Bo/ "Sponge + Ferric Chloride Method -- Etch PCBs in One Minute!"]
 +
* [http://www.k9spud.com/wiki/PCB:Etchants Ferric Chloride vs. Ammonium Persulfate] and other etching chemicals.
 +
* [http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/index.html Etching with Air Regenerated Acid Cupric Chloride] — an excellent in-depth page on acid cupric chloride etching by Adam Seychell.
 +
* [http://www.esmonde-white.com/home/diversions/etching-a-copper-pcb Etching a Copper PCB with HCl and H2O2]
 +
*[http://www.mgchemicals.com/index.html MG Chemicals]A possible source?
 +
* [http://reprap.org/wiki/MakePCBInstructions RepRap wiki: Make PCB instructions]
 +
 
 +
== Internal Links ==
 +
 
 +
 
 +
*[[Toner Transfer]]
 +
*[[Techniques]]
 +
*[[Eagle Links]]
 +
 
 +
 
 +
[[Category:Techniques]]

Latest revision as of 08:16, 26 June 2013

Chemical etching is one step of some popular PCB fabrication techniques.

In this technique,

  • one starts with a copper-clad board.
  • one puts a mask over all the copper he want to keep. There are a variety of ways to do this -- see Toner Transfer and Photoetching.
  • one removes the parts he don't want to keep, by chemically etching away the copper.
  • cleanup: wash off the board in the sink; carefully store or dispose of the acid.

There are a lot of different chemical techniques for doing this, each with its own advantages and drawbacks.

None of these chemicals is incredibly dangerous, but they can all be toxic or caustic, and should be treated with care. Eye protection and gloves are a very good idea. Before you start, make sure you know how dangerous each chemical is, and figure out what you will need to do if you spill it or get it on yourself. Washing with plenty of water is usually a good start. For some chemicals you may want to keep a neutralizing agent handy. An MSDS (Materials Safety Data Sheet) for the chemical will give you some basic information.

Contents

[edit] vinegar and salt

[edit] Ferric Chloride

This is the most common hobbyist etchant. Ferric chloride, FeCl3, is a brownish substance. It's usually sold in a bottle (dissolved in water, perhaps with a little acid or peroxide) or as a powder (which you have to dissolve in water).

When in solution, ferric chloride is a ferric ion (Fe3+) and a chloride ion (Cl-). The ferric ion reacts with the metallic copper on the circuit board in a redox reaction, producing a ferrous ion (Fe2+) and cuprous or cupric (Cu1+ or Cu2+) copper. The chlorine is just along for the ride. The copper ion, unlike the metallic copper, is soluble, so it leaves the circuit board and goes into solution. The reaction products form a black sludge which settles to the bottom of the etching tank. After etching enough copper, all your Fe3+ is used up and your solution is full of Cu1+, and you need to get more etchant.

[edit] Ammonium Persulfate

Expensive & hard to control and optimize the process parameters (such as specific gravity & pH value).

[edit] HydroChloric Acid / Hydrogen Peroxide

Mixing about 1 part HCl (Which can be found at most hardware stores, also known as Muriatic Acid. Ask for concrete cleaner.) into 2 parts Hydrogen peroxide (normally used for cleaning cuts) you can make a fairly powerful etchant. Use gloves and don't breathe the fumes though. This will etch a 3"x5" board in less than 10 minutes. No need to heat it up. I usually like to drill a small hole through the board on a corner and thread a wire or nylon string through to help agitate / remove the board.

When the board is done etching, the etchant will probably look like green kool-aid, from the copper content in it. This stuff is highly corrosive and will burn skin, which is why you should wear gloves. But it is easy to handle, and fairly easy to dispose of. the etchant is easily deactivated with baking soda. Pour enough baking soda into it slowly (to keep it from boiling and overflowing... remember what happens with baking soda/vinegar? ya...) until it is a solid mass, then leave it in the sun to dry. You should contact your local authorities to find out what you should do with it next. Whatever you do, DO NOT dump the stuff down the drain, it will eat through your pipes just like any of the other etchants.

Alternatively, instead of disposing of the etchant, you can re-use it again and again. In fact, after etching a few boards with this solution, you will have successfully made Acid Cupric Chloride (see below). You can also find a detailed tutorial on etching at Muriatic Acid etching tutorial

[edit] Sodium Persulfate

More environmentally friendly than ferric chloride. Can monitor the etching as initially clear new etchant solution turns blue from the copper ions.

[edit] Acid Cupric Chloride

Dead simple etchant made from ordinary, store-bought chemicals (hydrochloric acid and hydrogen peroxide). Has the advantage that it can be regenerated by bubbling oxygen/air through it, or by adding more H2O2. In addition, it doesn't get used up: the etchant bath simply grows with use (kind of like sourdough starter…) The used etchant also makes a great algecide/pH reducer for your pool (and a whole lot cheaper than that stuff they sell at the pool store).

What you need:

  • 38% Hydrochloric Acid, HCl (available at finer hardware stores or pool supply stores as Muriatic Acid)
  • 3% Hydrogen Peroxide, H2O2 (available from any drug store)
  • Plastic or Glass Pans, Jars, and tongs (no metal)

Directions:

  1. Mix your HCl and H2O2 1:1 in a non-metalic container, making sure to add the acid slowly to the H2O2. DO NOT ADD THE H2O2 TO THE ACID!!!
  2. After you've masked your board, dip it in the solution and constantly agitate. You should notice a dark green cloud start to come from the board almost immedately which quickly dissapears or turns lighter as it gets further from the surface of the board.
  3. Etching should take about 10min depending on the temperature and how well you agitated the etchant. When all of the copper is gone, dip in water to wash off any stray etchant and stop the reaction.
  4. When done etching, save used etchant in a non-metalic container and mark clearly its contents.
  5. If your etchant has become a dark, murky green color, add a little bit of H2O2 or bubble air/O2 through the solution to regenerate it back to a light, transparent green color.

See links at bottom for more information on the chemistry and some pictures of the process.

[edit] Disposal procedures

Flushing used etchant down the drain is a bad idea (and usually illegal) because copper ion is toxic. The usual recommended way to dispose of hobbyist amounts of etchant is to convert it to a solid somehow and dispose of the solid in accordance with local laws.

[edit] External Links

[edit] Internal Links

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox