3M 4×24 Belt Assortment review

Name: 3M 4" × 24" Aluminum Oxide Sanding Belt Assortment (10-pack)
Brand: 3M

Form

Belts

Grit

80-150 assorted

Material

aluminum oxide

The verdict

Where this pick fits.

3M aluminum oxide at 4×24 covers more board per pass. The wide-format belt for the sander that does the serious work of flattening and shaping.

Wide format, full range. The belt for the work that covers ground.

Quick take

Best for: 4×24 belt sanders, wide board flattening, production sanding
Format: Belts
Tier: Budget tier
Grit lane: 60, 80, 100, 120, 150

Use it when

The fit is obvious.

· Reach for the 3M 4×24 Belt Assortment when the job is 4×24 belt sanders, wide board flattening, and production sanding: that is the fight it was built for.
· Aluminum oxide is the reliable one: cheap, tough, no surprises and no complaints. It will outlast your patience before it outlasts the job.
· This is the working middle: enough bite to matter, refined enough to leave the job somewhere worth continuing.

Skip it when

The job asks for something else.

· Leave it if you are actually solving a different stage of the climb than the one this pick was chosen for.
· Leave it if longevity and cut speed matter more than the price: cheap abrasive is cheap for reasons you feel on the tenth sheet.
· Leave it if the surface is already close to finished: a belt will happily undo good work.

Best for

Where it earns its keep.

· 4×24 belt sanders
· wide board flattening
· production sanding

Keep moving

Useful next clicks.

Read the grit chartSee where this pick sits in the full climb.Browse projectsSee the exact grit climb for your job.

Buyer questions

The practical questions.

What is the 3M 4×24 Belt Assortment actually good at?

3M aluminum oxide at 4×24 covers more board per pass. The wide-format belt for the sander that does the serious work of flattening and shaping. In short: it earns its keep on 4×24 belt sanders, wide board flattening, and production sanding.

Is 80-150 assorted the right grit lane for this?

It sits closest to 60 grit, 80 grit, 100 grit, 120 grit, and 150 grit. This is a cutting stage, not a finish stage. Use it to remove material, not to fake smoothness.