uxcell 100mm 4-inch Grit 400 Diamond Coated Flat Lap Disk Wheel Grinding Sanding Disc

Love it. Use it on my 6” bench gringer for sharpening my tungsten and so far it’s holding up better than others I’ve bought. Time will tell but so far so good. It’s a 5/8 bore so you will need to find a way to center on most bench grinder bc a lot or 1/2. I turned a bushing down and also a back plate bc it’s not thick enough and nut runs out of threads but it was worth it bc it works well.

Used as replacement wheel for my HF sharpener for table saw blades. Requires a 5/8" to 3/8" hole adapter (Had to very slightly enlarge the 3/8" hole). Purchased the 400 grit wheel which provided much finer finish than original blade.

Works well. No issues

Works great on glass

I got these for shaping stones that I find here in Utah. While they DO work very well, their effectiveness drops pretty rapidly.

I built a saw blade sharpener and use this to grind the teeth. It makes a razor sharp edge and near mirror finish. Because I use light pressure when grinding, I use this without a backup plate. It works great!All that being said, it does appear the diamond coating is a bit thinner nearer to the OD but seems to work fine.

The arbor holes were not drilled on center. When the disks turned, the outer edge oscillated.. They were useless. Also, the diamond coating wore off in just a few minutes.. Junk.. Junk.. Junk.

The diamond coating wore off after a few times. Did not last