Rated 4.4 out of 5 by 40
Rated 4.0 out of 5.0 by TomTerrifc Aggressive 4-1/2 in. 40-Grit Steel Demon Grinding disc(s)
The 4-1/2 in. 40-Grit Steel Demon Grinding disc(s) did an exceptional good job of cleaning and eradicating 1/4 inch thick of solid rust and corrosion from my 3/4 inch thick ASTM A36 grade plate steel sheets. My only complaint is that the life of the grinding capacity of each wheel was much shorter than expected. Each wheel only lasted approximately 8 to 12 minutes at a constant and continuous grinding speed of 9,000 rpm. I went through 10 new 40-Grit Steel Demon Grinding discs wheels altogether for my project.
September 15, 2016
Rated 4.0 out of 5.0 by Robert Works as I need
Have not used this disc yet, but the other ones are working great. I may upgrade once I have used this particular product. I got this dics to sharpen lawn mower blades, but have not use it yet.
August 23, 2016
Rated 5.0 out of 5.0 by edieb GOOD IDEA!
I was really looking forward to the arrival of this "innovative" new grinder/polisher disc. My husband renovates antique tractors so there is always plenty of metal grinding and polishing. This has been the job of two separate discs in the past. The disc arrived. It looks very well made and incorporates both grinding and polishing discs.
I didn't pay any attention to the size of the arbor...the hole that fits on the grinder. This arbor is 7/8" and the grinder needs a 3/4". I'm hoping to find an adapter.
I would recommend this product. I can't see any reason why it wouldn't work as advertized. I have has other Diablo products and have never been disappointed.
November 13, 2014
Rated 4.0 out of 5.0 by Wink Flap Grinding Disc
This disc seemed to clog up to quickly. !!!!!!!!!!!
July 27, 2016
Rated 5.0 out of 5.0 by EK072947 Last longer than others
I do a lot of sanding to remove rust on a lot of different items from Truck beds to barn doors and the Diablo grinding disc seem to last the longest and don't clog up like some of the others I have used do. For bigger sanding jobs, there's no better or faster way to cut through material than using this sanding disc with the grinder. Love using the Diablo products. They have yet to let me down.
July 3, 2016
Rated 4.0 out of 5.0 by Eric best disc to work with without damaging the steel railing.
allowed the paint to fly off the sandpaper without clogging the disc with paint so it allowed the stripping of the paint to come right off easy! Made the job go quicker.
July 12, 2016
Rated 2.0 out of 5.0 by mainedave Didn't last.
I purchased this disc to clean up some welds. It did not hold up under normal use and I was only cleaning up some TIG welds and prepping the edges. I had some of the flaps shoot out of the disc while sanding. they did last longer then the flap discs from DeWalt.
June 14, 2016
Rated 5.0 out of 5.0 by milwaukeeroad Exceptional Longevity
The Diablo Steel Demon Flap Disc is substantial and has lasted far longer than expected. Although it is developed for use on steel, it was found to be absolutely essential for working with wood too. Obviously, top quality materials went into the design of the product and the construction of it adds to its efficiency and longevity. Effective and long lasting...what more could you ask for? Sold. I love it.
January 20, 2015