On Sep 1, 2:08*am, rick frazier wrote:
[snip]
*You can typically use carbide tools on granite, but you
have to go slow and may need to provide cooling. *(Can't recall seeing a
water protected router for years, though).

There are many waterproof routers, but most are over $ 3000.00.
Carbide and granite? Even water cooled it just won't fly. You can,
sometimes, get away with small touch-up on marble, but granite is just
too hard for carbide.
You can get discs for your angle grinder with diamonds, which you can
use dry, and they're not that expensive. But the dust is insane.
http://www.granquartz.com/