Scotch-Brite Clean and Strip XT Pro Disc - Rust and Paint Stripping Disc - 4.5” diam. x 5/8-11 Quick Change Thread - Extra Coarse Silicon Carbide - Pack of 1

Purchased both the green and purple discs to remove paint and rust on a trailer repaint project. The green discs work very well for primarily paint removal not “coarse” enough for rust. The purple discs worked very well at both paint and rust removal. Lighter rust came off very easily, the heavy, deep pitted rust took more effort but removed enough to make other rust removal effective. With some effort too, mill scale on sheet metal came off. The pads last for a pretty long time even while taking off heavy rust. Very impressed with the 3MCubitron abrasives, I plan to try the belts next on my 2” x 48” belt sander.

Best I found so far to clean metal before tig welding. Cleans mill scale and rust without cloggin. Doesnt last very long but I will buy more when needed.

Works great while they last, but they are very expensive given how long they last. Mostly I tested them byt removing paint and/or rust from a small amount of mild steel tubing, plate and bars.

Needed to remove very thick mill scale from mild steel tubing. This product was by far the fastest option I could find, it worked great.

this thing remove mill scale like a eraser ! and does not clog up / pile up the scale to the disk like the flap wheels does. it remove the scale and gives a well polished shine to the surface. Must have in the shop if you are doing metal work.. it is little pricy though.

Nunca pensé que este tipo de discos removiera tan fácil el óxido en metales me sorprendió al utilizarlo, estoy muy satisfecho y si problemas se le adapta a cualquier amoladora de 4 Pulgadas volveré a comprar otras 2 pza.

Title says it all

This disc makes mincemeat of mill scale WITHOUT removing base material as is common with flap discs. I was able to remove mill scale from a 7 deep x 7 tall x 6 feet long steel bumper in under an hour, then finished up with sanding in stages to a 180-grit finish for priming and painting. I ended up using one complete disc and just a bit of a second, but still have some remaining use of the first, which Ill use on smaller pieces when needed. I tried other off-brand non-wovens that are silicon carbide based, but they didnt seem to be as effective as the 3M product. Im sold.

Be careful here.3m part number 29900 is not silicon carbide,it’s aluminum oxide.

Got the actual disc as advertised. Works great. Given the proper selection of the correct abrasive 3m are often the best.