Thread: Lapping Naniwa 12k

I would not hestitate with the dmt 325 on fine stones, too. It gives very good results.
But the DMT should be worked in first. I did this with an old hard tool.
I just rubbed it ("sharpened it") several times (took me 20 minutes) and the DMT was ready to go.
But I recommend you to test the flatness of the stone before you do anything with it.
It may happen you are one of the unfortunate guys whose DMT is out of whack.
Verify it with something flat. My DMT 325 was despite tiny waviness very flat.
Unfortunately I had a little "spot" on one corner of my DMT.
The corners should be worked in especially well, because of high spots.
One of the corners of mine had a very big chunk of metal/synth. diamond sitcking out a little bit,
wich gave me a scratch.

I chamfered the edge of the DMT with 320 grit sandpaper slightly,
like I would do with normal waterstones. That helped.
Otherwise such action won´t be necessary prior to use

Have fun with your Naniwa and DMT