3 Inch Green Silicon Carbide Grinding Stone Wheel,Flaring Cup Wheel for Granite Marble Concrete Masonry with 5/8"-11 Threaded Arbor(120 Grit)

Working on my basement bathroom and this grinding stone Has come in very handy working with tiles.

Doing some tile work and floor finishes in the basement. As is often the case, the concrete finishing around floor drains, posts and sumps often lack finesse. The stone does a nice job of smoothing, but it is not really made for heavy cutting. Wear becomes evident quickly even with light pressure. When the stone was molded onto the threaded plate things got away just a little, I had to chisel a bit to seat the grinders arbor, it has a tiny wobble but not enough to be a problem at lower rpm.

This worked well for smoothing out concrete patches if held at the right angle, or cutting grooves in it if not (lots of dust either way). I accidentally dropped this off a table (unattached) and the edge chipped, so be careful.

The media could not be loaded.  Due to its hardness and brittleness, green silicon carbide is typically used to grind harder and less ductile materials.Green silicon carbide is higher purity than black silicon carbide. Green silicon carbide is sharp and easily pulverized, which makes it a good abrasive, but gives it a low impact resistance. It is the hardest of the conventional abrasives and is used to grind less ductile materials of lower tensile strength such as carbides and ceramics.When used for grinding steel green silicon carbide wheels tend to wear faster than when used on harder, more brittle materials. This is because the steel can deform and "pull" at the abrasive grains, causing them to fracture and separate from the wheel.

With a diamond saw - cut grids then hammer or chisel out and use the grinding wheel to smooth out. Diy custom sinks

I used this 3 inch grinding wheel with my 4" angle grinder to shape a couple of channels into my concrete driveway to drain some standing water at a low point in my driveway. It worked pretty to smooth the channels after I cut a v-shape with s concrete saw. Recommended!