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

Great tool for removing paint and light rust, will definitely be buying more

Decent at removing hot rolled millscale when new but gets very hard to use and requires a lot of pressure once it starts to wear, I just used an Aluminum Oxide grinding wheel to get the millscale off and a flap disc to smooth it out. Faster and cheaper even though you’re going over it twice. These weren’t worth the money for me. Three stars since they did work well when they worked and left a beautiful finish.

I have pretty much every kind of grinding and finishing tool, and probably 30 electric tools: disc sanders, angle grinders, D/A, orbitals, air grinders, what have you. Metal worker for 40 years. Honestly these discs are pretty amazing. First encountered them on a drum type surface conditioning tool meant for metal brush finishing. Used that machine on some aged wood with old paint - super fast and smooth finish. Went looking for a disc style because its smaller and more versatile. Sandpaper and grinding discs are slow and wear out fast in comparison to these. They dont load up with paint so amazing stripping paint from wood, metal, concrete. I bought these specifically for a basement upgrade project. To clean concrete residue from timber, which is a slow job with a regular sanding disc or D/A. Could use a wire wheel but they are slower and dig out the grain a lot more. And discovered on the same project that these are perfect for stripping old paint off the concrete floor, and for cleaning the concrete walls. Those are all tough jobs with few quick solutions. Awesome. (If rather a dusty job!) I went with 3M because the discs last a long time, and 3M is not generally the cheapest but their sandpaper usually lasts the longest. This will clean rust and paint off concrete and stone like nothing I have seen. Leaves a fairly smooth finish. The grades of these are oddly named. The green one is coarser, more aggressive, but leaves more scratches. The purple one looks almost identical but leaves a finer finish. I would probably go with purple first but if it seems slow switch to the green. Rust is easy with these things but mill scale on steel is about the toughest coating on earth to remove. I would think green better because its more aggressive. Scale will still wear these discs out. A grinding stone disc wears longer but bounces around and leaves a much more scarred up surface. For stripping paint and rust, cleaning stone and concrete, metal finishing, lumber cleaning, bbq grills - this is hands down the one disc I would recommend most people have in their tool shed. The only negative thing I would say is that a mini-grinder tends to spin at over 10,000 rpm which is just too fast. I put these discs on a 5 Makita sander that runs about half that and its much easier to control, but the arbor needs to be adapted which is a longer story. If you can find a mini grinder with adjustable speed that would be ideal but they are not common.

Exactly what I needed to remove mill surface from plate steel when prepping to weld-no other abrasive product that I have tried compares to this-perfect! Typical 3M quality. Longevity of the disc is as yet unknown,but is a minor concern for me-I will purchase more if need be....

la use para limpiar unas ollas que tenían capas de grasa quemada, primero quite un poco de grasa quemada con gabon y con una carda de alambres delgados, después pase esta carda de fibra y quedaron como nuevas

Did not work well to remove rust from iron but has other cleaning capabilities

Bought 2 of these to strip mill scale off large sheets of steel. Would work reasonably well for maybe 1-2 square feet and then got progressively less effective. Found pad was fouled by the material removed. Took steel file and removed the junk which revitalized the pad for a while but was a losing battle. Finally threw in the towel and used muratic acid to finish the job. Did find pad was very effective at removing resulting surface rust which appears once acid is washed off and panel dried. So it has a use but not as effective as the description made it sound.

Works Great on Mill Scale, but doesnt last long. This wore out very quickly. That being said, it takes off heavy mill scale very quickly while leaving a smooth surface. Much smoother and quicker than using a 36 grit sanding disk. But it didnt last very long. I love using it, but for the high price, Im not sure Ill be buying more, except for when I need the nice smooth surface.

Great product. Works exceptionally well

Title says it all