Discs
Pro
Grit · 800
Festool Granat 5-Inch Disc, 800 Grit (25-pack)
The last pass before the gloss answers every decision that came before it.
FEPA P-grade · Converted
P800 in CAMI grit and microns.
P800 paper averages about 21.8 µm on the FEPA table. On the US CAMI scale that is about CAMI 400. A sheet printed plain "800" is a different animal: about 12.6 µm, nearer P1500. If the instructions say P800 and the pack has no P on it, reach for the CAMI number, not the digits.
- Avg. particle
- ~21.8 µm
- FEPA table
- Nearest CAMI
- 400
- by particle size
- Plain "800"
- ~12.6 µm
- CAMI 800 ≈ P1500
- 3M Trizact
- A20
- 3M’s own pairing
What P800 is for
Leveling clear-coat defects; color sanding.
- 3M Trizact A20 / P800Clear-coat defect leveling.
- Festool Granat P800Pre-polish on finishes.Check price →
Holding US-marked paper instead? The size match is CAMI 400: 3M Wetordry 400 (read as CAMI, per the note on that chart).
Either side of P800
The neighborhood.
At this grade
Paper we link at P800.
Sheets
Mid
Grit · 400
3M Wetordry, 400 Grit
400 wet. Where primer stops being primer and starts being a base.
Questions people ask
What is P800 in CAMI grit?
About 400. P800 averages 21.8 microns on the FEPA table and CAMI 400 averages 23, so the scratch is close to the same.
How many microns is P800 sandpaper?
About 21.8 microns average particle diameter, per the FEPA P-grade table (ISO 6344).
Is P800 the same as 800 grit?
No. P800 averages 21.8 microns; a sheet printed plain "800" on the CAMI scale averages 12.6, which is closer to P1500. The CAMI sheet is the finer of the two.
What Trizact grade is P800?
3M pairs P800 with Trizact A20 in its Trizact brochure. Don't read the A-number as microns: 3M's own pairings put A45 at P400, which averages 35 microns on the FEPA table.
Convert any other grade, from CAMI, microns or a Trizact A-number, on the grit converter.
Sizes are average particle diameters from the published FEPA (ISO 6344) and CAMI (ANSI B74.12/B74.18) tables. "Nearest" means within 10%; otherwise both neighbors are shown. Trizact pairings are 3M's own. Sources: Wikipedia, "Sandpaper" grit table (rev. 1127917881); Klingspor coated abrasives grit chart; 3M Trizact A-to-P table.