I’ve read a lot of messages about how people are saying don’t use
this or don’t use that. I use a Genie. Yes, a Diamond Pacific Genie!
Just don’t go any finer than 1200! And make sure to use lots of water.
I haven’t had to use Zap or tripoli to get a nice polish, either. I
have used cerium oxide with positive results on a soft leather wheel.
To shape the piece, I use the most aggressive wheel on the Genie.
Sorry, I can’t remember what the grit is, but it’s enough to shape
agate, marble, jasper, quartz, just about everything. Once the rough
shape is ground, I move to the 600 wheel, and no coarser. If you have
access to a Genie, it’s reliable, it’s safe, and it’s quick.