Diamond Dust Pendant.
Q.I'm making a pendant out of Tungsten carbide - which I know is unusual - but I make pendants out of unusual/exotic materials as a hobby. I am used to working with tough materials - I make pendants from 6al4v titanium through to tigers eye - but this T.C is proving troublesome. The type of T.C is a brand called Cerbide (I'm using that because it does not have cobalt in it) and it blunts my diamond wheel (a wet tile saw) after a very small amount of cutting (1 mm on the 1/4 blank I'm making my pendant from). I can get the diamond wheel 'back' by grinding some other material like granite, which I presume is grinds back the binder in the wheel to expose more diamods again. Has anybody got a suggestion for a way to work this stuff? All I have at my disposal are basic tools and very little money to purchase anything else. Would those small silicon carbide wheels for dremmel tools work it? As a last ditch method I may try scoring it with the diamond wheel and breaking it to shape in a vise. Is there a better way to keep the diamond wheel cutting?
A.A diamond wheel should deal with carbide with no trouble. Makes me wonder if this Cerbide you spoke of isn't really a ceramic. Is it heavy? Tungsten has a very high specific gravity, something like 17. The one thing that can spell trouble is if you're grinding any steel at the same time. If not, and the wheel continues to perform as it does, you really have few options. Dressing the wheel with stone as you've done is what needs to be done, and it may or may not be taking a toll on the wheel. All depends on if the wheel is loading, or is getting dull. If it's loading and all you're doing us cleaning it, fine, but if you're dulling the diamond, you need to look into the reason why. Silicon carbide is a quantum leap softer than diamond, so it isn't likely to work well. The green wheels are formulated to break down quickly so sharp grain is constantly being exposed when grinding very hard materials. The typical silicon carbide wheel (not the green ones) would dull quickly and quit cutting. They also more or less club off the carbide, leaving a terrible finish as compared to diamond grinding. I'm not convinced you'd like working with the green wheels, which are quite messy, and hazardous to your health (silicon dust).
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