[simplechamp]

I have been doing a little bit of reading:

"Spot-Annealing Hack Saw Blades and Other Hardened Steel:

Spot-annealing requires a drill motor and a nail or other steel rod about the diameter of the desired hole. Cut off the nail head and smooth the end, then chuck the nail into the drill motor. At high speed, attempt to drill a hole in the hardened steel. The attempt will fail, but the resulting friction will heat the metal until the point of contact turns straw, then bronze, then peacock, and, finally, blue.

Stop the heating process and allow the steel to cool while you replace the nail with a drill bit of the desired size. At low speed, using a cooling/lubricating fluid, drill the hole through the softened steel."

Anyone think this is a possibility? Seems like a weird way to heat up the metal, but maybe it would work? Otherwise I'm thinking of just heating up the cap with a torch.