From: hermit 
CC: Russell Jocoy , atm{at}shore.net
Reply-To: hermit 


Jeff Baldwin wrote:
>
> 5 micron aluminum oxide is great, and it's safe.  It's pretty cheap, so
> using toothpaste to safe money or get a finer final grind isn't my idea of a
> good idea.  I wouldn't stop at 9 or 12 micron, I'd go at least through 5.
> JB
>

5 micron brings your surfaces pretty close together.  Many first timers
have problems with scratching at this stage.  I have always believed this
was due to the high likely hood of not being quite spherical as a first
time grinder.  I'd go to polishing.

Ken

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