[sdiy] PCB etching re-revisited

[peter foti]

I've been using etched brass for my panels for years now.  I use an
electro-chemical process. I use PnP blue as the resist and a copper
sulfate solution and DC power supply for the etching. Here's a post on
electro-music where I describe the process, if your interested:

http://electro-music.com/forum/topic-26116-0.html

Later in the post, others describe some cool techniques for etching aluminum.

Peter