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Ultimate Geek
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# 210474 28-Mar-2017 21:52
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I had thought that ceramic knives never need sharpening.  But they do, and the sharpener has to be diamond.  Question is -- does anyone know where to get a sharpener in NZ?  Suitable for general home use, not a cheffy one.  Googling "ceramic knife sharpener" brings up millions of knife sharpeners made of ceramic material and very few sharpeners for ceramic knives, demonstrating a serious failure in language.  AliExpress better, but results not very convincing.  Just wondered whether one of you had purchased one, and where from.




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Wannabe Geek
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  # 1749815 28-Mar-2017 22:18
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Ceramic knives are very hard to sharpen by yourself. You'll have to send it to the manufacturer, and they'll sharpen it for you (cost depends). I know with Kyocera knives you pay the shipping to Japan, and they sharpen it and ship it back to you for free.

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  # 1749982 29-Mar-2017 10:27
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I would second @alpbetgam's suggestion.


It's the main reason why I own no ceramic knives. I'm a bit of a knife-aholic and use a slow speed bench mounted belt sharpener for my steel knives. It's made by a US company called Work Sharp and is available in NZ although it's about $500 so you need to want to be doing your own sharpening and enjoy doing it to justify the expense.


They do make a ceramic knife sharpening kit for it - here - but I do not have it. There's a video on the page I linked to as well.


Mad Scientist
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  # 1749988 29-Mar-2017 10:34
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is there any harm in trying with a normal sharpening tool you buy from stevens? they claim to be diamond sharpener

Swype on iOS is detrimental to accurate typing. Apologies in advance.

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  # 1749993 29-Mar-2017 10:43
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I have a Lansky diamond sharpening set.


It would probably be able to do it, but the knife needs to be clamped into a holder and the sharpening stones moved over the knife edge at a set angle (which is what the clamp is for).


It does a really good job on steel knives (quite time consuming though). I would be worried that it would chip or crack a ceramic blade however.


For steel knives I now use a Nirey electric sharpener. It does a good job.

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  # 1750003 29-Mar-2017 11:02
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is there any harm in trying with a normal sharpening tool you buy from stevens? they claim to be diamond sharpener





Ceramic knives are usually pretty costly, so messing them up could be an expensive refurb at best - or total ruination at worst.


A friend of mine had some Global kitchen knives when they were trendy 20 years ago. He decided he would be a smart Alec and sharpen one on his FiL's angle grinder. Ended up with a ruined blade with a deep reverse curve where there should have been a flat edge, no cutting edge and the temper burned out of the blade because he had over-heated it. In the bin it went!


It's a sensible view to take that if you paid for expensive knives, trying to sharpen them on the cheap is a foolish way to treat your investment.


We have a mobile knife sharpening guy who visits the restaurant kitchens around here every few months - he charges $6/knife and they come back sharp enough to shave the hairs off your arm, which is fairly much the standard they should be at.

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