The verdict
Where this pick fits.
Goes between the coarse work and the mirror finish. Wet or dry, where the surface starts to feel like itself.
Auto-body's quiet workhorse between primer and color. No drama, all follow-through.
Quick take
- Best for: auto color coat, pre-polish metal, between lacquer coats
- Format: Sheets
- Tier: Mid tier
- Grit lane: 800
The full read
800-grit Wetordry is where the coarse work becomes a memory and the surface first starts to feel like itself. 3M's silicon-carbide grain stays sharp and consistent whether you run it wet or dry, though wet is where it shines — the water floats the swarf away so the paper cuts clean instead of clogging and scratching. This is the in-between grit, the one that sits between the aggressive cutting and the mirror you're chasing.
On auto color coats and between lacquer layers it does patient, unshowy work: knocking down the last of the coarse scratches so the finer grits have something honest to refine. It's mid-tier and priced like a consumable, which is correct, because you'll go through it. Buy it as part of a climb, not on its own — 800 is a step, and the whole point of a step is what comes after. No drama, all follow-through.
Use it when
The fit is obvious.
- · Reach for the 3M Wetordry — 800 Grit when the job is auto color coat, pre-polish metal, and between lacquer coats — that is the fight it was built for.
- · Silicon carbide bites sharp and fast, and it loves water. Brittle, brilliant, a little reckless — the grain that leaves glass when you keep it wet.
- · This is refinement territory. It flatters a surface that is already close; it will not rescue a rough one.
Skip it when
The job asks for something else.
- · Leave it if you still need to remove stock, paint, filler, or machine marks; fine grit only polishes over problems it cannot fix.
- · Leave it if you already know you want the premium option; a mid-tier pick is a compromise, and you clearly are not in the mood for one.
- · Leave it on the shelf if you are flattening big panels all day — a random orbital keeps pressure even where your hand drifts.
Best for
Where it earns its keep.
- · auto color coat
- · pre-polish metal
- · between lacquer coats
Keep moving
Useful next clicks.
Buyer questions
The practical questions.
What is the 3M Wetordry — 800 Grit actually good at?
Auto-body's quiet workhorse between primer and color. No drama, all follow-through. Goes between the coarse work and the mirror finish. Wet or dry, where the surface starts to feel like itself. In short: it earns its keep on auto color coat, pre-polish metal, and between lacquer coats.
Is 800 the right grit lane for this?
It sits closest to 800 grit. This is refinement territory. It improves the surface that is already close rather than rescuing a rough one.
What should you put it up against before buying?
Put it against other sheets in the same price band doing the same job — that is where speed, finish, and cost-per-use sort themselves out.
Rough start. Smooth finish. The gap between is where the work happens.
House rule
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