DMT and Lee Valley diamond paste

Micron-graded honing compound

DMT Dia-Paste and the Lee Valley diamond pastes carry a stated micron (6, 3, 1). Maker figures (hollow), no distribution.

Each grade below shows its size in microns, its spread (the published distribution, where a maker or standard gives one; most makers publish none), and where that size lands on the reference scale, a shared yardstick for reading grit numbers across makers.

Particle sizemicrons, log

5321

coarserfiner

inkmeasured or standardmaker figureour estimate

shapeknown distributionpoint, spread unknown

6 micron (4000 mesh)Maker-published

6 µm

Copper color code.

spread not published · reference scale about #2200

3 micron (8000 mesh)Maker-published

3 µm

Yellow color code.

spread not published · reference scale about #4000

1 micron (15000 mesh)Maker-published

1 µm

Gray color code.

spread not published · reference scale about #8850

Lee Valley diamond paste 6 micronMaker-published

6 µm

Monocrystalline diamond in mineral oil; independent product, same 6/3/1 progression as DMT.

spread not published · reference scale about #2200

Lee Valley diamond paste 3 micronMaker-published

3 µm

spread not published · reference scale about #4000

Lee Valley diamond paste 1 micronMaker-published

1 µm

spread not published · reference scale about #8850