Sharpening

S

slices

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Sep 7, 2003
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Spyderco answered my question & they reply that the brown hones in the Sharpmaker are approximatly, & they stressed approximatly, 600 grit. The fine white hones are about 800 grit. The ultrafine white hones are about 1000 grit.

They said that you could'nt do a direct comparison to a stone , but the above numbers are close.
 
That surprises me a little. I don't have a Sharpmaker but I have the Double stuff hone witch I think is the same ceramic. I would have guessed the brown was more like 800 and the white was 1,200 or a little finer for both.
 
Grit numbers like that are meaningless as they are not a standard unit. You would want to state the equivalent in another specific micron abrasive, ie. produces the same finish as XXX DMT diamond or ZZZ waterstone.

-Cliff
 
Cliff,I agree. that's what I found out from Spyderco. They said "you just can't use grit numbers to describe a ceramic hone, they don't work that way ." For that reason, they were only able to give me very approximate numbers to correlate with sandpaper/stone grits. Seems there's no real cross refrence available along those lines,that I'm aware of, but one would sure help.
 
To produce a meaningful estimate you would just need to sharpen a blade with the ceramics and view the scratch pattern under a decent magnification (20x or more) and compare it to various other finishes. The problem with using a grit number is that everyone has their own scale, 1000 grit waterstone iif very different than 1200 grit DMT. I meant to do that last time I bought a Sharpmaker for a friend.

-Cliff
 
Another problem is it also depends on how much pressure you use wile honeing.
 
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