--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" <stefan_trethan@g...> wrote: > > On Tue, 03 Jan 2006 20:06:54 +0100, Bruno St-Laurent <bsl88k@n...> > wrote: > > > > > > > Thanks a lot for all these info !!!!, right now mine is bright clear > > > > green but etch really slowly, so i'll get H2O2 30% !!!! > > > > > > Thanks > > > > > > Bruno > > > > > As long as there is not enough cucl in the tank even when bright green it > will not etch well. But it will etch, very slowly, until it gets darker, > which might be before the board is finished ;-). > > ST > Stefan about the H2O2 30% , you really mean 30% not volume 30 ???? cause today i found H2O2 volume 30, it's only 9%!!!!! Bruno
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Re: CUCL Temperature , etch time ?????
2006-01-05 by Bruno St-Laurent
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