Man, I just love this guy's work. I just built the Blast Fed Disaster, which is like a bigger more versatile Atari Punk Console, and I'm loving it. Photos soon. He has a bunch of great projects here: http://www.thesquarewaveparade.com/brdlayot.html
No, I'm out of etching solution right now. The circuit is pretty easy, and I did it with protoboard without too much trouble. Really the only tricky bit is making sure all the wires are going to the right pot. If you have different colors of wire I'd highly recommend that method.