I just took apart a big electrical panel, extracting 194 lbs of copper buss bars. I also have a modest quantity of solid copper spot welder parts.
Vaguely recalling something, I performed an ebay search for "copper bullion bar".
To my astonishment, I noticed that "copper bullion bars" are selling very briskly on ebay for about $7.50 per lb, including in large quantities.
ExampleThere is no way I can get that much from a scrap yard, the best I found for #1 copper is something like $2.79 per lb.
So, my thinking went into overdrive. Can I melt these bus bars into custom made molds, saying something like
SUPERFINE 99% COPPER BULLION ALGEBRA INC. MINING DIVISION
If so,1) What material should I use for molds, I have a CNC milling machine to create a shape, and
2) Will I be subject to a lot of EPA regulations if I have a small metal casting operation