DMT coarse or extra coarse (reprofiling)

B

bubblewhip

Joined
Dec 18, 2009
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So I'm thinking of buying a DMT diamond stone for reprofiling purposes. Not heavy reprofiling but for really dull knives. My procedure would be to hit it on the DMT extra course and then move to a 150 grit benchstone to flip it and finish it off with 1000 grit. Yes I know you insane people that move to 3000 grit and beyond, but 1000 grit I find to produce a mirror polish and is an adequately polished blade lacking the micro serrations from an unfinished blade. My concern was is how rough is the DMT Extra course, I'm using this to remove a lot of metal, but I'm concerned of how rough it is and I might actually lose time moving from extra course to 150 grit to smoothen it out.

Which one is more recommended in this case? Should I go with the extra course or go with the regular course stone?
 
I don't see the need to get a C stone. If you've got bad edge damage, just hit it up with the XC stone, move onto F, and then finish with EF. That's exactly what I do. You can get rid of XC's scratches with F in a few passes anyway, so I don't see the need for C.
 
I'd go with the extra coarse (black) rather than the coarse (blue). I have both, and the black is much faster, but of course, a little rougher. I don't know how coarse 150 grit is though, I'll wait and see what the others say on that. Using the coarse will be less of a jump, but it does take longer (noticeably) to reprofile than with the XXC.
 
DMT XXC= 120 grit
XC= 220 grit
C= 320 grit

You should probably go for the XXC.
 
Can't remember the color off hand but when work needed to be done this is the stone to have.
 
Agree with XC or XXC. These will get you an agressive, sharp knife in just a few minutes. These DMT's are going to be scary at first until they break in. Also, an inexperienced honer can destroy a knife with these coarce stones.
 
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