Use this on anything but steel and you will watch it carve a pattern into your work piece. This thing is SERIOUS! This flap sanding disc is made for steel and does an incredible job of BOTH grinding and polishing steel. Hold it in one place too long and it WILL grind for you. You can use this to clean up welding beads, for instance. But if you just want to clean off some rust or bring some brightness back to a steel surface, just keep it moving and you'll be fine. I would NOT use this to clean up mating surfaces or anything precision. This WILL mar the surface and DOES remove a substantial amount of material. For instance, don't use this to clean up your engine heads or gasket surfaces. DO use this to clean up the side of the block, however. I used this to polish the top of my welding table. Worked great!
For a while, I thought about buying a new grinder because my old one didn't seem to work as well as it should. I had excess vibration and numb hands after a couple minutes work. I always work carefully, but sometimes the discs would break. I wondered if my technique was at fault. Then I got these...
I discovered what a difference good abrasive discs make! These have accurately made flanges so the disc doesn't wobble and cause vibration. That makes a HUGE difference in how efficiently they work, and gives a better finish, FAST. My hands don't go numb because these don't vibrate like others. It wasn't my grinder or my technique: it was the cheap discs I had been using!
The abrasive in these Diablo discs is high quality and properly adhered. It is friable, so it wears at the correct rate for angle grinders. That always presents fresh abrasive to the job and produces cleaner smoother results. It makes using power tools FUN again!
It makes sense that Diablo would be good at these. I've gotten great results with their orbital sanding discs and saw blades too.
The discs are what make any angle grinder work. Just as a good blade makes any saw cut better, good abrasives make grinders work better. If you know tools, you know Diablo, Try some of these. You won't be disappointed!
accurate flanges, balanced discs, less vibration
Took me a second to get this chucked onto the arbor of my angle grinder--I forgot the arbor nut was reversible (derp). After I got that sorted out, I was in business. I needed to sand paint and rust off of my smoker so I could re-coat it with some better paint. This flap disc took care of business in a jiffy, getting me down to bare, shiny metal quickly. Probably took me about one minute to get a square foot of material clean. I'm not sure I'd use this for grinding metal--it did generate some sparks, but I think it would be slow going if you were doing something like smoothing out a weld. I'd go with a standard carborundum grinder wheel for that.
I've also seen people use these to shape wood, and I may try a bit of that when I have the chance. Overall, this is a super-handy product.