Ceramic honing rods (kitchen)

Ceramic stone

No particle size in microns is published for this line. The values are our estimates from secondary sources, so the marks are faded and the spread is unknown.

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

20105

coarserfiner

inkmeasured or standardmaker figureour estimate

shapeknown distributionpoint, spread unknown

Idahone FineOur estimate

16 µm

Range 10 to 20 µm. none-published by Idahone; a retailer '1200 grit' and a community ~20 micron review conflict (20 micron implies coarser than #1200, nearer #800 to #1000).

spread 10 to 20 µm · reference scale about #720

Messermeister white (1200)Our estimate

9.5 µm

Maker prints '1200 grit'; micron is the JIS #1200 d50 (8.7 to 10.3), a C-estimate, not a Messermeister figure.

spread not published · reference scale about #1200

Messermeister black (2200)Our estimate

5.5 µm

Maker prints '2200 grit' (some US listings say 2000); micron interpolated between JIS #2000 and #2500.

spread not published · reference scale about #2350

MAC black (~2000)Our estimate

6.7 µm

Maker states 'approximately 2000 grit'; micron is JIS #2000 d50 (6.1 to 7.3).

spread not published · reference scale about #2000

Wusthof J3000Our estimate

4 µm

Maker states J3000 (J = JIS); micron is JIS #3000 d50 (3.5 to 4.5).

spread not published · reference scale about #3000

Wusthof 800Our estimate

14 µm

Maker grit 800 (JIS); micron is JIS #800 d50 (13 to 15).

spread not published · reference scale about #800

Kyocera (~1000)Our estimate

11.5 µm

Kyocera publishes no grit; a single reseller (Dictum) says 'approx 1000'.

spread not published · reference scale about #1000