Alt-BEAM Archive

Message #02819



To: "James Niemasik" jfn@best.com
From: "Hyndman" hyndmanm@cadvision.com
Date: Fri, 30 Apr 1999 10:10:00 -0600
Subject: [alt-beam] Re: PCB


>For artwork, you can draw with resist pens (only useful for small
>circuits or
>artwork touch-ups), you can use little resist stickers, or you can >design
your
>artwork on a computer, and print it either to iron-on paper for >PCBs or
>transparencies, which you can use an ultraviolent lamp with for >special
UV PCBs.

>After you've got the artwork on the PCB, use Ferric Chloride or >Ammonium
>Persulvate in crystal (dissolve it) or liquid form. Heat the liquid >and
put the
>board in, then agitate it for 5-25 minutes. Then use an SOS pad >or a wire
brush
>(or dremel) to scratch the resist off the board, leaving the copper
>traces.

Your forgetting a bunch of things, like putting it into developer, and
liquid tin, preparing a copperclad board, percausions. I would reccomend
buying a PCB fabrication kit, these things aren't what you call very safe
chemicals. When explaining how to do it you have to be an expert on this, I
don't think people would be too pleased with the list if a few people get
chemical burns.
Devin

------------------------------------------------------------------------
eGroup home: http://www.eGroups.com/group/alt-beam
http://www.eGroups.com - Simplifying group communications

Home