Originally Posted by
SouthFLpix
That's an interesting point, although the melting point of aluminium is over 900 degrees.
Irrelevant. Heating and cooling do funny things to materials. Metals (aluminum is not a metal) are hardened by heating to phase change, then rapid cooling (quenching); metals are tempered by heating below phase change. If my razors get above the boiling point of water, I could mess up the temper and then the steel won't take or hold a good edge.