Water Heater Trash Incinerator – HomemadeTools.net
Cool project and with a stack like that probably has a lot of good draft. Might want to add a copper coil to the top and recover some of the heat energy from the trash for heating water - free trash disposal and hot water would be sweet - or maybe a blower to better break down some of the plastics with less smoke. But at least with that unit your not likely to smell much yucky smoldering plastic trash.
