On 2018-04-08 4:14 PM, Bill Ghio wrote:
> Diamond should cut the black too.

It will. I've been reluctant to use my diamond for that. Not that it 
gets much use otherwise. I think I read somewhere that it shouldn't be 
used for flattening stones.

No idea why or where. But considering how many came out in favour of 
that method, I'll try it.. Thanks to all who responded.

Don

-- 
I have decided to leave my past behind. So, if I owe you money...I am sorry, but
I’ve moved on.

The harder they come, the bigger they fall." Ry Cooder