On Mon, 9 Jan 2006 14:32:50 -0500, "HotRod"
wrote:

Does anyone know of a plastic that I can buy at my local hardware store that
I would be able to melt and pour into a mould? I just want to practice and
create a few parts from plastic before I try and use metal?

Sorry, no. Metal is dense, plastic isn't. So moulds designed for
gravity-poured metal just won't fill properly when used for plastic. I
don't see this "practice" approach as really telling you that much
useful. IMHO you'd be better of making some simple pours with the same
techniques and materials you're planning to use in the end.

Bronze into lost foam/sand is a good metal casting technique to begin
with.