Yeah, a butane lighter works or a small butane torch. Problem with them is you sometimesget some soot on the glue from the flame. Get too much soot in the glue and it won't stick as well as it should.

Best thing to use is one of those alcohol burners. They sell 'em at the same place you're looking at the glue. Denatured alcohol burns cleaner and won't leave that soot on the glue. It's a lot cheaper than gasrefillstoo. I need to get one, myself.