How To Make A Homemade Drill Powered Thread Tapping Machine Hello Everyone! Today I show you how to make a thread tapping machine. This diy tapping machine is powered by the drill machine. I step down the drill machine speed by using the sprockets and chain to multiply the torque for this diy tapping machine. I used two 105mm discs and a trolly wheel to achieve the forward and reverse rotation by applying a simple mechanism you can see it in this video. By using this homemade thread tapping mach