Grit Table / film / Diamond lapping film
Product, maker figures
Diamond lapping film
Film
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 size microns, log
30 10 3 1 0.3 0.1
coarser finer
ink
shape
30 micron Maker-published
Monocrystalline diamond on polyester.
spread not published · reference scale about #400
0.5 micron Maker-published
spread not published · reference scale about #13050
0.1 micron Maker-published
Fine end of 3M's stated diamond film range.
spread not published · reference scale about #31500
80 micron Maker-published
Generic multi-brand diamond film ladder (AngstromLap/XYT, Jende).
spread not published · reference scale about #180
0.5 micron Maker-published
spread not published · reference scale about #13050
0.3 micron Maker-published
spread not published · reference scale about #17550
0.1 micron Maker-published
Finest standard generic diamond film grade.
spread not published · reference scale about #31500
This is reference, not a recommendation. Particle size is defined by the abrasive grading standards (ISO 8486, ISO 6344, JIS R6001, ANSI B74, FEPA); the full references are listed and linked here . The data is free to use under CC BY 4.0 ; please credit Zen-Wu Toolworks.