The Casting List. The Casting List is an e-mail discussion group covering all aspects of model-making, mold-making, and casting. There is also a companion web site. The Caster's News, a "spin off" of The Casting List, is an E-zine devoted to casting, molding, rapid prototyping, and model-making. The first issue is slated for June 1, 2001.

Electro.Patent-Invent.com A great resource to find out about basic electrical and electronic inventions and phenomena. Also has some patent and thesis information.

FoundryOnline.com. Has links to many foundry related sites and some tutorial information about basic commercial RP processes.

That’s an Idea. Invention and patent advice for both amateurs and professionals.