sharpening ceramic blades

Hey folks...

Anyone have experience or specific knowledge on how to sharpen ceramic blades?

I have a couple of older blades that are getting a bit dull and one has a chipped tip... I'd like to recondition these and possibly "repair" or reform the tip on the one that is chipped.

I'm not sure my stones are up to the task and I don't have a mechanical grinder/sharpener at the moment...

thanks for ya'lls help,

Don

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Send them back to the factory. All the manufacturers provide a sharpening service as none of them want to release just what it takes to sharpen their blades. Diamond stones tend to leave fractures instead of smoothly removing material, water stones just aren't hard enough and don't work.

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Thanks,

but these knives were cheap enough that it's cheaper to buy new replacements than to "ship" them back to the manufacturers...

What I'm trying to do is learn how to sharpen them myself... since I take care of all my other "metal" blades and these "cheaper ceramics" would be good practice pieces... GRIN

I'm thinking of getting a bench grinder and belt sander/grinder for my bench in the4 near future... and was wondering if those would work if I got the right belt/stone-wheel...

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ceramic. I used to use diamond past with lubricant and felt polishing wheel to polish hard (bearing races) metallurgical samples for micro examination after etching. You will probably have to polish an edge rather than actually grind an edge. Try a google search.

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To do it right you need diamond abrasives. Depending on what the blade is made of (most are zirconium oxide)silicon carbide MIGHT do it. If you're used to sharpening freehand with stones or with one of the guided systems DMT sells diamond stones of both types. There are certainly other manufacturers, but I've used theirs. https://dmtsharp.com/

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