Originally Posted by
Crawler
Do NOT get a razor anywhere near boiling water!!! Remember, the steel is tempered. Applying any amout of heat beyond a comfortably warm lather runs the risk of ruining the temper. After that, the razor won't hold an edge worth a darn.
At least, time + temp = increased likelihood of ruined temper. Rinsing the blade with warm water won't do a lot to the temper. But the time it takes for boiling water to disinfect is way more than I would subject such a thin piece of metal to.