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3m 150 Grit SandBlaster Bare Surface Sanding Sponge Block 20908-150

Sanding Block Type

Grit Size

Material

Size

Brand

Model

For easy surface prep of bare wood, metal, or drywall. Electrostatically coated ceramic aluminum oxide mineral blend, a tough, durable mineral for increased durability and work life. Cuts 3 times faster, lasts 3 times longer. Clog resistant, washable. Use wet or dry. Tough foam backing resists tearing. 150 grit. 3-.75'' x 2-.63'' x 1''. Carded. Length: 1.2. Width: 4. Height: 2.7- SKU: JNSN8351

Universal Product Code (UPC check)

I use these sanding sponges for the final sanding before I apply a finish. I also use them to gently round over edges. They are very easy and comfortable to hold. They last about as long as regular sandpaper, maybe a bit longer. When they load up I clean them by throwing them on my workbench or vacuuming with a shop vac. Overall I find them very effective and easy to use.

Very effective and useful

3m.com

Absolutely fabulous sanding block the grit doesn't seem to breakdown like with sand paper sands perfectly flat and is great for sanding contours as well two thumbs up.

Great sanding

For a relatively expensive item the first sponge I used - coarse on a slightly curved piece of driftwood - deteriorated to useless in less than 10 minutes.  So during if I ha e missed something I have looked for instructions to no avail.  I will return the sponges I haven't used yet.

Short life span

This sanding sponge is worthless! Bought the roughest grit (36) and it barely removes paint let alone smoothing the surface under the paint (wood filler). Spent 20 mins and now the sponge feels gritless and surface still no where close to smooth!

worthless

As you can see in the photo, I will not be able to use one side of this sanding sponge.

Defective...cannot use one side.