Quote Originally Posted by ursus View Post
Well that does mean that there isn't anything extra added there, but since it's natural water it might contain trace minerals/salts that cause the spotting. Or it just might be the steel. You could try to eliminate the water by purchasing distilled/bottled water, heating it and shaving with that for a while and see if the spotting is as bad.

If it is, I saw a blade here that somebody rustblued for the same reason.
I do have a couple of gallons of distilled water. I'll try almost anything at this point. Thanks!

Rust bluing is an interesting idea. I looked it up on wikipedia. This is probably too much of a tangent (and perhaps a silly question) but I wonder why they chose to do rust bluing instead of hot bluing.