Never sharpen again?

Concept seems similar to carbidized knives. One side of the edge has carbide applied, so when the steel on the opposite side wears away you still have a cutting edge present. The same process is used on drill bits, end mills, saw blades, etc.
 
The article is all about making knives that stay sharp, how can it not be knife related ??

Richard
 
Great, next thing you know, scientists are going to make robots that are trained to interact with each other in online knife communities and then bladeforums will be obsolete...

JGON
 
Esav Benyamin said:
Let's talk about beavers. :)
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and hairless pussies too! ;)

hairlesspussy.jpg
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LKJW said:
http://dvice.com/archives/2010/12/sea-urchin-toot.php

Pretty cool.
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I believe titanium carbide edges already do that, and I'm not a big fan of them.

They never really get quite as sharp as any other knife that you could sharpen, I only see them in chisel grinds, and I doubt the blade itself would be very tough.

Besides which, I think a similar principal already lies in most modern powder metal steels with high volumes of hard carbides that do the cutting while the softer steel is worn away.
 
hardheart said:
Concept seems similar to carbidized knives. One side of the edge has carbide applied, so when the steel on the opposite side wears away you still have a cutting edge present. The same process is used on drill bits, end mills, saw blades, etc.
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They also use it on wood chippers modeled after rat's teeth. On a rat's tooth, the softer dentin in the back wears away, making the front enamel concentrate into a sharper point. So like you said, now they have the front side carbide and the back side steel.

I watched a History channel presentation on it. Pretty neat.
 
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