Answer Question
Poltava 15,000 grit Metallic CBN leaving inconsistent scratch pattern
I have the Poltava 15,000 grit CBN stone I purchased from Gritomatic earlier this year and about 50% of the scratch pattern is much deeper than the rest. These scratches are so deep that I have to regress to an 800 grit stone (Borride T2 800) to get the scratches out and it is not a one or two pass operation. At this point I really can't use the stone anymore. What could have caused this and how do I fix it. Thank you.
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