Top critical review
5 people found this helpful
Not silicon carbide as claimed, don't even try it.
on August 9, 2016
This isn't a Silicon Carbide wheel from what I can tell. I didn't finish sharpening one dull carbide blade and I was covered in dust with a huge groove in the wheel, nearly 1/2" deep. Looking at the carbide on the tool, it wasn't even scratched. The green-wheel on my hand grinder did all 32 cutting blades on my machine and barely showed any wear. If you need to sharpen carbide tools, look at other Silicon Carbide wheels.
Update: I got in a real Silicon Carbide 'Green Wheel' and took a photo with it to the left of the Powertec and a regular grinding stone. You can clearly see that the POWERTEC stone is closer to a regular grinding stone. DO NOT BUY, even as a regular stone, because they claim it has silicone carbide, you'd be a fool to use this without respiratory protection, and it doesn't perform any better than a regular stone wheel.