I believe you have that backwards Don
Response To:
Re: cbn wheels ()

Dick Coers
Diamond wheels came out and were the new best thing. Until the marketed lifetime wheel quickly degraded.
Per Peter Child's website;
Diamond grit wheels
These are getting cheaper all the time with the introduction of better methods of producing synthetic diamonds. Diamond wheels are not suitable for grinding steel but they can be used at very low speeds in a water trough with some success. If used on a high speed grinder on steel the diamonds will be gradually destroyed because the carbon (diamonds are 100% carbon) will dissolve into the iron or actually burn in air. Diamond grinding is reserved for carbides such as tungsten carbide and for other hard non-ferrous materials. Honing your steel tools by hand is OK because the diamonds do not get hot.

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