Originally posted by NorCal DC4
A piezo-electric ignited blow torch is safer. No risk of blowback or can detonation. 
blowback scares the shitz out of me. i was holding a can of compressed air upside down and letting the liquid drip onto a flame. for some odd reason my face was right next to the flame, and i seen the flame run up the stream and into the straw...i got skerd and threw the can across the room.
h: