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Is 3 phase difficult to get in the US? Here it is fairly common for regular households to be wired to 3phase 400 volts (240 between each phase and the neutral). Those 3 phases are usually distributed...

For knives I don't bother with it either. They have the thickness to protect them and you need to remove steel to set the bevel anyway. I do it with a 240 grit belt. For razors it takes a ton of...

The edge section itself is (should be) so thin that the etchant would destroy it. And it takes a whole lot of honing to get through that to the good steel.

Caused by the fact that his is a quarter hollow or so, and probably not as thin as we would have ground it.
But it certainly looks cleaner than my first :)

I like that he protected his edge during etching, but a better way would have been to use tape to mask the blade before applying the nail polish, and then remove the tape. That will give you dead...

That should come out at about .7 % carbon which make heat treatment dead easy.