I would like to put some holes in a gent's saw's plate for a regular handle. I have read on here somewhere about spot annealing band saw blades so they can be drilled. The person put a nail in a drill and ran it till it got real hot. Is there any danger of the heat spreading to the teeth and if so should I clamp something to the blade to suck up the heat? I think this is what is referred to as a heat sink?

I also saw a guy sandwich a big timber saw blade between two plates each with a hole in them and simply drove a pin punch through his saw. He does it at about the 26 minute mark of this video:



Would this work on thinner gauge steel?