Review on Diamond Coated Cylinder Mounted Grinding by Billy Danaher
Very fine grit but seems solid
As another reviewer said these bits are about 150 grit so they don't cut hard material very quickly but they cut without wearing out quickly. I was willing to sacrifice one of these to see how strong they are, so I tried really hard to poke a drill through the thick steel to enlarge the damaged hole. With this kind of mishandling, the bit gets very hot very quickly (and will likely come out of the chuck) but I was pleasantly surprised that the grinding surface stayed intact.
- Weight
- Some minor things
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