You guys will love this! A powered hacksaw for larger steel. An old man I know built it years ago and gave it to me about 2 years ago. The motor I believe is either an old belt drive blower or washing machine motor. The idler pulley is off an 80's Ford. The gearbox is from a commercial ice maker. The switch at the arm joint kills the power when the cut is finished. The bolt on the end of the arm is to hang a 5# weight off of. Just clamp your tubing in the vise, set the blade on it, hang the weight, start it up and walk away.