Here is a real simple tool that comes in real handy when doing cutout and sizing the wax to fit inside frames.
It is just a piece of wire twisted between two pieces of wood. I attach the wire to the transformer of my wire embedder and have a rotatory switch to turn it on/off. It cuts thru the wax almost as good as a hot knife thru butter. I seem to be able to do less damage with this than with a serrated knife.
(http://img509.imageshack.us/img509/3280/wireknifeew9.th.jpg) (http://img509.imageshack.us/my.php?image=wireknifeew9.jpg)
Is it hot enough to burn bees? What distance between the gap to straddle the comb?
Yes it can burn the bees. It's about 2 inches or so wide. Nothing critical with the dimensions, I just made sure it was deep enough for a medium frame.