The Tormek Blackstone Silicon is designed to shape and sharpen very hard and other high-alloy steel grades.

The whetstone can also sharpen carbide if the tool already has the correct shape.SB-250 grinds in the usual way Carbon steel no faster than the original Tormek grinding stone. The combination of the hardness of the abrasive grains, the shape and the size allows the stone to work effectively at the low speeds of the Tormek machine. The higher grinding ability of the grinding stone is for grinding tools with large grinding surfaces, and where the grinding pressure is low, particularly suitable, for example for machine planer knives and chisels for turning. ~ ~ ~
You have to differentiate between shaping and sharpening a tool. Shaping involves grinding away material to obtain the desired shape and cutting edge angles. When sharpening, you clean an existing shape and make the cutting edge sharp.
Dimensions of the grinding wheelDiameter: 250 mmWidth: 50 mmWeight: 4.39 kgColor: blackMaterial: silicon carbideAdjustable sharpening properties corresponding to a grain size of 220 up to 1000Guarantee: 2 years