Thread: Shaving with a ceramic knife

Watch the 'How do they do it' about Kyocera knives - pretty interesting. Sorry cant add the link ATM.

Yea, up until today I would have said that too. After having seen the video of the Kyocera blade being flexed I am not all that sure anymore. I don't think an SR blade would deflect that much without snapping the first time.

Bob

Someone buy one of those Kyocera knives and grind out an SR already! A white, translucent, rust proof razor sounds like a better idea the more I think of it

Originally Posted by BobH

Ceramic armour is not a new idea and has been around for a good long while. I don't see why a cutlery company would need to sandwich ceramic between metal. If ceramics can hold and maintain an edge why would the steel be necessary for? The blade in the two videos seems to be ready for regular use. I would like to see an all ceramic straight razor make an appearance.

Bob

Never said it was a new idea, Bob. Just that it's being done. I wouldn't be surprised, if the day ever comes, that the engineers/scientists find a way to improve ceramic alone by bonding it to metal. Kind of a throwback to the soft steel/hard steel sandwich used in many knife blades today.

OK, but I still can't see the need for a steel ceramic sandwich for an SR blade.

Bob

Watching the flexure test video and being a research student makes me want to shout about all the flaws in the test. I don't want to bore you with them.

Flexible ceramics have been around for a while. I toured a client's plant a few year ago and they specialize in ceramics. they had all kinds of stuff but curiously one of the things in their sample display was a spring, which to my surprise....sprung just fine.

Short answer from prior to "what do you sharpen them with", diamond laps are the fastest way to do it. Same concept as any other abrasion, you have something you want to sharpen, you find something harder to abrade it. The good ones sharpen just fine. As mentioned earlier, some of the cheaper knives are just coatings on things and little bits come off in your food. Hopefully that's harmless.