Review on KONIGEEHRE Stripping Grinder Coating Oxidation by Kevin Graham

So far I've only used one of these discs (purple) and tried it on 3 different surfaces. I am renovating a very old detached garage built in 1909 and renovated in 1942 and 1975. First there was an old brick to remove the white discoloration. It only took a few seconds to clean a few bricks and they looked brand new. I then have an old door skin with layers of oil paint from the last 45 years that I wanted to strip down to bare wood so I didn't have to replace it, I did a section and the wood looks great and it's very smooth. On the last one with the same disc I did some old grout which was a bit stiffer but it pulled through. (I might want to use a prep puncher first) After all this, the disc hardly looks worn. I'm so glad I bought these because they do exactly what I need. Just make sure you cover everything, including yourself, put on a fan and safety goggles, and work outside if you can!