Alt-BEAM Archive
Message #00787
To: beam beam@corp.sgi.com
From: Torin Huzil jth@crack.biochem.ualberta.ca
Date: Mon, 22 Feb 1999 11:49:47 -0700
Subject: [alt-beam] Etching PCB's
Hi there, I was wondering if anyone knew what the chemical used for
etching circuit boards was? I just read that it was either Ferric
Chloride or APS? Also does anyone know what the concentration of these
echants are and if they are just made in a solution of water or some
kind of acid? Also how long do you let it sit on your board for?
Thanks
Torin
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