Alt-BEAM Archive
Message #06728
To: beam@sgiblab.sgi.com, beam@sgiblab.sgi.com
From: Robert Stein rastein@dakotacom.net
Date: Wed, 13 Oct 1999 17:34:33 -0700
Subject: [alt-beam] Re: PCB etching
At 06:39 PM 10/13/99 -0500, Richard Piotter wrote:
>You need Copper Clad board, etching solution, something like steel wool
>or fine sand paper to clean the board before working on it. You'll also
>need a resist. the Easiest resist is paint or fingernail polish remover.
>Radio shack sells rub on patterns, but the lines don't always hold. I
>recomend getting a dry transfer kit from radio shack and use the pin
>hole pads and the IC pads for the holes, and then for the lines, use
>paint (acrilic craft paint is good, and you can peel it off) or
>fingernail polish (you'll need acetone fingernail polish remover to get
>it off, but it's easy to work with).
>
>When done making your patern, use a GLASS, PLASTIC, OR RUBBER container
>to pour heated etching solution into (It'll eat through metal). Put the
>board in and allow it to etch for the proper amount of time. Time can
>vary depending on temperature and how new the solution is. Expiriment!
Actually you can buy kits that supply you with almost all the things you
need from start to finnish, including tinning the board after etching.
Photo masks are easy to make. Email me if ya want my method for making
them boards and masks. Or if there is the demand I will send it to the
list. Just a warning...it is not high tech.
later
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