DEWALT DW8311 4-1/2-Inch by 5/8-Inch-11 36 Grit Zirconia Angle Grinder Flap Disc

These work great for my boat building project.

Works great for sharpening lawn mower blades, without being too aggressive…

Truly lives up to description and longevity. Does a great job, easily grinds without binding or grabbing material. Consistent life. You will know when its time to replace, material will start to flake off and glaze work piece.

Used to get clean finish on an edge. Works good.

DeWalt

For my money I always go with DeWalt. These remove material fast and last a long tim compared to other brands. Ive tried a lot of different makes and DeWalt seems to work the best so far. Their cutting/grinding stones are also great.

I like these but the life span of good grinding seems to be short for the price paid. The benefit though is the ability to grind without grinding hard flat points into the material. With practice you can follow the natural contour of the metal you are grinding. Use these when you want to shape or clean off the surface; used the solid grinding wheels when you need to grind down to get the final shape before using these disks.

Ive been using the disc to sharpen mower blades. Works great. Sharpened four 21 blades and still looks new. I suspect it will last me a long time with my limited use.

I love the quality of Dewalt tools, and I really love the amazing prices you can find them for through Amazon. Combine that with the free two day shipping that Amazon Prime membership provides, and these tools are a do-it-yourselfers dream. Any time I have a chore or project coming up, I check Amazon to see which Dewalt tools will do the job more efficiently. At these prices and with such fast shipping, it is always possible to have the right tool for any job.

I have always used these types of grinding discs for cleaning up metal surfaces. They dont chatter and when light pressure is applied the surface is polished. They work better and last longer is pressure is kept to a minimum so the work piece doesnt heat up, even just the pressure of the grinder is enough as these discs remove material quite fast.