That about covers it, really.

I've just inherited four straight (cut-throat) razors, one of which looks like it should be easy enough to make usable, the others less so, one definitely not so.
I found this forum while searching for info on a Bengall Razor (I have two though one needs some work) as well as a Magnetic Platypus (needs more work) and a Gotta (irreparable blade damage).