Subject: Metal Etching...

From: "N. S. A." <[email-masked]>
Date: Wed, 24 Jul 1996 13:29:45 -0400

I need any information regarding the process by which one etches metals
(most importantly brass) using a rectifier and an electrolyte.  The
process seems to be much like metal plating, except you remove the metal
>from  the workpiece.  Although any information would greatly help me, I am
most interested in the composition of the electrolyte (chemicals,
concentrations, temperature, what type of cathode should be used, ect.)

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From: [email-masked] (Nigel Cliffe)
Date: Thu, 25 Jul 1996 09:57:09 +0100

> concentrations, temperature, what type of cathode should be used, ect.)

Not exactly what you've asked for, but DIY _chemical_ etching of brass is
covered by and article at:

http://phoenix.bath.ac.uk/~justinw/two_mm/etch/etch.html

- Nigel
(2mm Scale Association Editor, and author of most of the 2mm site).

-- 
Nigel Cliffe,   mailto:[email-masked]   BT Labs, Ipswich, UK
   Opinions my own, they may or may not be shared by my employers

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From: Andrew Werby <[email-masked]>
Date: 29 Jul 1996 23:08:18 GMT

>> concentrations, temperature, what type of cathode should be used, ect.)
[There were some people named Behr who worked out a method of doing this
for fine-art etchings under a Lindbergh Foundation grant.They tried a
 traditional hard ground as well as a photoresist, and both seemed to work.
 They reported good success in ink retention, doing away with the strong 
acids usually used to prepare etching plates. Basically, their system was an 
electroforming setup run backwards.]

Andrew Werby - United Artworks

http://users.lanminds.com/~drewid