Melting copper & pouring ingots to re-sell and stacking copper bullion.
Copper melting furnace http://amzn.to/2EogD2b - Crucible salamander A10 http://amzn.to/2DNCjnd

Pouring copper bars is my hobby as I stack all kinds of precious metals like gold & silver as well as copper.

Free copper is available from scrap microwave ovens, old tv's, electrical motors etc.

I sell some of my ingots to other stackers and pure copper ingots fetch 6x scrap value because it's not easy to do, it takes an investment if a furnace & equipment as well as being quite a dangerous thing to do with extreme temperatures.

See these bars listed on eBay here.. https://goo.gl/8vQMFD

Scrapping tools, safety gear, metal melting furnaces, crucibles and ingot moulds that I use or recommend.. https://www.amazon.com/shop/ewasteben

Keep scrapping & have fun!