I have to wonder, if we're talking about heating / warming the blade using friction from the strop, you'd have to get quite the speed up to actually cause any significant warming? I can see heating the blade via hot water, maybe, but hot enough to make the metal malleable?

I'm not a metallurgist, but it would be interesting to hear if in fact the level of heat generated via these methods would actually have any affect??

Hmmmmm....