DIY Impact Mill/Rock Crusher - Crush Anything (Gold Ore, Circuit Boards, etc)

I built an impact mill that will crush a 4" rock into powder in under 1 second. This rock crusher is also known as a chain or a flail mill. I also run some aluminum cans and a circuit board through it.

Here is the forum thread I based my design off of: http://www.treasurenet.com/forums/hard-rock-mining/397851-gg-s-chain-flail-impact-mill.html

Видео DIY Impact Mill/Rock Crusher - Crush Anything (Gold Ore, Circuit Boards, etc) канала USMiner