Thread: Abrasive Grit Comparison Sheet

Originally Posted by sebell

I suppose the back of my GlassStones counts as
`in-writing'...

1000 mesh - 14.7 micron
2000 mesh - 7.35 micron
4000 mesh - 3.68 micron
8000 mesh - 1.84 micron
16000 mesh - 0.92 micron
30000 mesh - 0.49 micron

- Scott

Pam on Knifeforums just posted something interesting...

For the glass stone series,

Divide 14,700 by the grit size and you have the particle size in microns.

Divide 14,700 by the micron and you get the grit.

Multiply the grit by micron and you get 14,700.

(some of the numbers give small errors due to rounding. For example, the 4000 grit stone should have a 3.675 micron size, but since shapton only takes things to the hundredths, they round up to 3.68.)

So, apparently shapton considers a stone that has a one micron abrasive size to be a 14,700 grit stone.