Quote Originally Posted by Neil Miller View Post
Good luck Oz! That fellow in one of the links took seven years to perfect his black polish recipe...

Regards,
Neil
3" of razor will finish a lot quicker than 28" of katana ~ believe me, I have done the latter



Quote Originally Posted by Alraz View Post
Very interesting indeed. I always thought that "iron" oxide was pretty unstable and would readily become a hydroxide (upon reaction with water). I found this link stating the chemical formulas of several iron oxides and their color. The application, in this case is different but I felt that I would share this information with you guys here:

Iron oxides in cosmetics

And I just found this one as well, man this is pretty interesting:

Iron oxide - Wikipedia, the free encyclopedia

Al raz.
Thanx Al but the oxide is traditionally mixed with Choji oil for sword polishing. I agree water sounds a bad idea