A couple years ago, I bought all the metal I used. Now I'm scrounging more than I buy. I have seen a lot of good ideas/finds online, and was thinking about putting together a guide for people like I used to be. Here is what I came up with after work today. If people want to make additions, I'll compile it, and post it online somewhere. Thanks, Jeff.
Raw materials:
Copper:
Grounding wire. Lots of grounding wire, or other large gauge solid wire is pure copper. Handy for alloying with other stuff to make bronze, brass, sterling silver, etc