Thread: DMT NEW PROBLEM.

Originally Posted by Quick

I'm not sure how anyone has come to any conclusions yet? Have you heard back from the DMT rep yet? It would seem that the black slurry might be metal. So maybe the Charnley is honing the metal on the DMT plate. How do you know that the DMTEE wasn't defective?

i haven't heard anything back yet.i don't know DMTEE WAS or wasn;t defective?as soon as i get anynews form them i will post in here.unfortunately i didn't take a picture before i ship to dmt.My last dmt 6 e which start to having same problem and i am now trying to clean it up.tired to use my hands but will clean as much as then will post pictue too.Lets see.
Good luck to all and thank you for posts

Just got off of the phone with customer service at DMT. The technician said that if all that you have is the D8C then go ahead and use it but that the D8X and D8XX are preferable.

He said that under no circumstances should you use the D8F, D8E or above to lap waterstones no matter what the grit.

Always lap under running water.

Originally Posted by JimmyHAD

Just got off of the phone with customer service at DMT. The technician said that if all that you have is the D8C then go ahead and use it but that the D8X and D8XX are preferable.

He said that under no circumstances should you use the D8F, D8E or above to lap waterstones no matter what the grit.

Always lap under running water.

Thanks for checking on that, Jimmy. Looks like I'll retire my D8E from using it to smooth out the D8C scratches on my stones. I can use my diamond patterned 8"x3" Belgian Blue for that.

Chris L

Originally Posted by JimmyHAD

Just got off of the phone with customer service at DMT. The technician said that if all that you have is the D8C then go ahead and use it but that the D8X and D8XX are preferable. He said that under no circumstances should you use the D8F, D8E or above to lap waterstones no matter what the grit. Always lap under running water.

Thanks for finding this out!

I'm glad to hear that I only have used my D8C for lapping, but to be honest I'm a bit shocked that DMT said that even that is too fine for lapping.
If the D8X is preferable, why do so many SRP members own, use, and recommend the D8C?
I find it hard to believe that this has never come up before.

Originally Posted by huntmol

...
If the D8X is preferable, why do so many SRP members own, use, and recommend the D8C?
...

I'm guessing because it gives a nice balance between cutting speed and surface finish. By comparison, IIRC, the Shapton GDLP uses 270/325 grit diamonds.

I use the D8C myself for lapping. On the harder barber hones, Chinese 12k, white Spydercos, etc... I use a D8XX 120 followed by a D8C.

Originally Posted by huntmol

If the D8X is preferable, why do so many SRP members own, use, and recommend the D8C?

'cause it's about as coarse as you'd want to go to set a bevel and about as fine as you'd want to go for lapping in a reasonable time?

Originally Posted by Quick

'cause it's about as coarse as you'd want to go to set a bevel and about as fine as you'd want to go for lapping in a reasonable time?

Yep. That and the fact that several of us already had that 'stone' for knife sharpening.

It is possible to ruin a DMT stone and I've seen it done a couple of times. One time was when a fellow was using it to flatten Arkansas stones. After a few stones it didn't have much of a surface left. Another time I saw one where the guy had used the back of a wood chisel to break in the stone and he'd gouged the surface with the corner of the chisel. Didn't do the stone any good!

I flatten stones with a D8C and don't go any finer than that as the DMT stones load up in a couple of swipes. The worst thing would be to have a lump of coticule on the DMT and none further down the stone and it would throw off the flattening process. I lap under running water in the kitchen sink to wash away swarf and it still builds up pretty fast. My razors seem to do fine on a coticule lapped flat with a D8C.

I use the D8C for lapping waterstones with no problem. I do about a dozen stones every week and have done so for the past five years. Still using the same DMT by the way! I put the DMT in the kitchen sink on top of a piece of rubberized shelf liner and adjust a flow of warm water over the end of the stone about 1" in from the end. I use long oval strokes with the coticule/escher/norton etc. and the water washes away the swarf. No scratches on the waterstone.

i haven't heart anything from DMT yet.that is why have not say anything lets see what they will tell?