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That's why I bought one in the first place he said straight from bevel set to 50,000 grit diamond spray and he could do it. I tried hard to make it work and when I finally figured it out I realized...

I have lapped my UF all I can say is that I'm unsure that diamond is the hardest material anymore. It is made by spyderco. Pretty soon people will be purchasing these to wear as jewelry.
Seriously...