Video: Yowza. That burns hot. Watch as a Petrogen Multi-Fuel cutting torch nicks right through a stack of metal and cuts it clean off. The cutting system can use liquid fuels of any kind, including “gasoline of any grade, “white” gas, camping fuel, and stabiliser additive fuels” and “diesel, kerosene, biodiesel”. Basically, you pump fuel into this thing and other things start going poof.