Subject: Etching Brass

From: [email-masked] (Tom Lum)
Date: 7 Nov 1995 04:27:29 GMT

Using a permanent marker is indeed a possible etch resist. Radio Shack 
sells a "resist pen" which is really a "Sharpie" permanent marker. 
Anything that is a waterproof barrier to the Ferric Chloride will serve. 
The only problem is that the edge of the "resist" or mask will probably 
be a bit fuzzy unless you take care to clean it up to a clean edge. There 
are spray on photo resists used for printed circuit board manufacture in 
the electronics industry. Call your local electronics store (not Radio 
Shack) if you live in a large city.