I need a DC Motor Speed Controller for my 2x72 grinder build. I found an older treadmill on FB Marketplace for $80 and made it happen using parts from eBay. This was an easy project to complete and it was cheap!

10,000 Watt SCR Motor Controller - https://amzn.to/2Zl3WmG
Bridge Rectifier - https://amzn.to/2MOmViv