Review on π 10 Diamond Burs Rock Lapidary Grinding Tool by Gary Hall
They last longer than others!
I bought several different diamond bits to use on beach rocks. some were only enough for one stone! These are still good! You can see/feel when a diamond is worn and I'm so glad they work so well. I always use underwater at the lowest possible speed to avoid heat (which will burn out the diamond dust) and all the stones are the same relatively soft stones. A harder stone like quartz will definitely wear them down faster.
- Can be used with a Dremel tool
- Crumpled
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