Hello
Intersting etching chemicals.... can you tell me what is the proportion between Muriatic Acid and Hydrogen Peroxid.
Than you
________________________________
From: Daniel Howard Bryant <
coloradobryant@...>
To:
Homebrew_PCBs@yahoogroups.comSent: Sunday, June 7, 2009 10:03:01 PM
Subject: [Homebrew_PCBs] Re: Muriatic Acid and Hydrogen Peroxide Fumes
If you plan on making many PCB's, then I would suggest building a small fume hood that your etching tank will reside in. Use an exhaust fan whose flow rate(cfm) is 10 times the volume of the fume hood, and duct the exhaust outside. The nice thing about having a fume hood, is that it will allow you to experiment with different chemistries.
Be safe and have fun!
--- In Homebrew_PCBs@ yahoogroups. com, "perri.anthony" <perri.anthony@ ...> wrote:
>
> Hi all
>
> I am etching with Muriatic Acid and Hydrogen Peroxide, so far I am happy with the speed and quality of the etch but I am concerned with the fumes. It's ok to etch the boards outside this time of year in the north east but I will have to work in a closed garage in the winter. What can I do the limit or eliminate the fumes from the process?
>
> AP
>
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