Venev Resin-bonded diamond

Diamond

The maker publishes these figures. A single value per grade, no distribution given, so each is drawn as a point.

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

1005030201053210.50.3

coarserfiner

inkmeasured or standardmaker figureour estimate

shapeknown distributionpoint, spread unknown

200/160 (F80)Maker-published

Venev

180 µm

Range 160 to 200 µm. FEPA-F ~F80.

spread 160 to 200 µm · reference scale about #90

160/125Maker-published

Venev

142.5 µm

Range 125 to 160 µm. FEPA-F cited as both ~F80 and ~F90-95; the micron band itself is unambiguous.

spread 125 to 160 µm · reference scale about #110

100/80 (F150)Maker-published

Venev

90 µm

Range 80 to 100 µm. FEPA-F ~F150.

spread 80 to 100 µm · reference scale about #160

50/40 (F240)Maker-published

Venev

45 µm

Range 40 to 50 µm. FEPA-F ~F240.

spread 40 to 50 µm · reference scale about #290

20/14 (F400)Maker-published

Venev

17 µm

Range 14 to 20 µm. FEPA-F ~F400.

spread 14 to 20 µm · reference scale about #680

7/5 (F800)Maker-published

Venev

6 µm

Range 5 to 7 µm. FEPA-F ~F800.

spread 5 to 7 µm · reference scale about #2200

3/2 (F1200)Maker-published

Venev

2.5 µm

Range 2 to 3 µm. FEPA-F ~F1200.

spread 2 to 3 µm · reference scale about #4800

2/1 (F1500)Maker-published

Venev

1.5 µm

Range 1 to 2 µm. FEPA-F ~F1500.

spread 1 to 2 µm · reference scale about #7050

1/0 (F2000)Maker-published

Venev

0.5 µm

Range 0.25 to 1 µm. FEPA-F ~F2000.

spread 0.25 to 1 µm · reference scale about #13050