Dry Diamond lapping powder?

[Tony Shea]

I've seen many suggestions for using a dry diamond grit applied to a steel plate for lapping blades and chisels flat. I just can't seem to come up with actual diamond grit in dry powder form. Seems as though it's always a paste or the dry grit is actually just sand paper grit (don't know the technical term).

I've mostly just used sandpaper glued to a peice of granite and lapped things flat this way, but as the sandpaper wears in places it can actually cause the object to be less flat than when I started. Mostly my fault for not spreading the wear out or by not keeping the lapping consistanly in the same area. But my assumption is that the loose diamond powder on a steel plate would help eliminate some of the human error and actually cut much longer.

Where does one find this dry diamond lapping powder?

[David Weaver]

320626166421

no affiliation, but I know i've bought from this guy.

I only bought 20 carats at a time for $20 each, though, and the largest was 100 grit.

There are plenty of others.

- lapidary diamond
- diamond grit
- diamond powder

Things like that are what you want to search

If you can get a micron size instead of a grit, base your decision on that for the smaller stuff. I think I have something labeled as 20,000 grit and it still leaves a haze on a tool - I think it's more like 2 or 3 microns instead of 1 or 1/2, and diamonds are aggressive, so 2 or 3 microns cuts deeper than it would on a stone.

[Chris Fournier]

Granite inspection surface and 320 grit wet/dry sandpaper.

[Dale Sautter]

Where does one find this dry diamond lapping powder?

I've ordered from here (http://www.lascodiamond.com/products/dmdpdr.htm) a few times, quick shipping... I'm happy with their service. Also have ordered a couple times from HandAmerican (http://handamerican.com/) for the fine diamond spray, .25 and 1 micron. Looks like HandAmerican's stuff is now being sold through ChefKnivesToGo (http://www.chefknivestogo.com/handamerican.html) now.