Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Leonardo, can you elaborate on the chemicals you used and the process you
used for applying, developing, and etching? Did you use a recipe for the
chemicals?



Jeff



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From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of Lessa, Leonardo
Sent: Sunday, April 15, 2012 5:10 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] Re: Alternative photoresist chemicals - Idea?





Hello,

A couple of years ago, as Vesko, I used homebrew photo resist based on
chemicals used for silk screen printing.
I have had a good results with this process however to achieve this results
you must have some practice and patience.
I have some pictures of boards that I did in the past with this process:
http://tinyurl.com/cj7d5bn

L. Lessa

Em 15 de abril de 2012 16:54, Roland F. Harriston <rolohar@...
<mailto:rolohar%40comcast.net> >escreveu:

> I Gum Arabic photosensitive? And does it polymerize (harden) after being
> exposed to light?
>
> Roland F. Harriston, P.D.
> ∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗
>
> David wrote:
> >
> >
> > Another emulsion base for homebrew resist is Gum Arabic......
> >
> >
> > >
> >
> >
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and

Photos:

> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>

--

Leonardo Lessa
Linux User #65287

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