They do work very well. But use in a well ventilated area... in other words don't breath the fumes!
I was warned that when the cutter melts the foam there are fumes (both noxious and toxic) produced by the melting foam (that may or may not be visible). Maybe that's BS but I'd hate for one of my fav haunt forum members end up a prop.what fumes Scare FX... I didnt have any..mind you I only cutted 1/2 inch today...are there bad fumes with bigger foam?