Josh stated:
Read the narrative here…
That is a very interesting little device. I would be concerned that it would ruin the heat treatment of a knife especially where the metal is thin near the edge and possibly do more damage than good. It shouldn’t be too hard to duplicate with a vibrating engraver, a tungsten TIG electrode and a little fiddling with power requirements.
I know that titanium nitride coated drill bits don’t hold up as well after they have been sharpened the first time; even though the side where the chip forms is still coated. However a fishing knife that cuts relatively slowly compared to a drill bit may be just fine with only one side sharpened as long as a burr isn’t present.[/quote]
Same thing I thought of. You would have to be trashing the heat treatment. But, maybe if you sharpen after that a good amount you might get to a good heat treated surface again? But then the carbide shell is thin..did it mess with the heat treat everywhere below it at a microscopic level? Which is what we are trying to achieve with sharpening. Then again, its Titanium so I am not real familiar with its heat treating and edge retention. I think the edge retention kind of sucks compared to most blade steel which is why they are putting on this carbide layer to begin with so maybe it is not a big deal.
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