Sharpens harder steel Tormek's SB-250 Blackstone Silicon has been developed specially to shape and sharpen HSS and other high alloy steels. This makes it popular with woodturners, among others, with its more efficient material removal on hard woodturning tools. The SB-250 Blackstone Silicon has an adjustable characteristics equivalent to between 220 and 1000 grit. Why SB-250 Blackstone Silicon? More efficient sharpening of HSS and other high-alloy steels. Adjustable sharpening characteristics equivalent to between 220 and 1000 grit. Effective even at lower grinding pressure. Fits the Tormek T-8, Tormek T-7 and older models. Tough on the toughest The combination of grit hardness, shape and size makes the SB-250 Blackstone Silicon work efficiently at the low rpm speeds of the Tormek machine. The higher abrasiveness of the stone is especially valuable when shaping tools with a large bevel or sharpening surface where the grinding pressure is low, such as planer blades and woodturning chisels. The SB-250 Blackstone Silicon fits the Tormek T-8, Tormek T-7 and earlier Tormek models with a grinding wheel 250 mm (9 7/8") in diameter and 50 mm (2") wide. Efficient material removal, for a long time The SB-250 Blackstone Silicon has sharpening properties equivalent to 220 grit. The SP-650 Stone Grader allows the surface of the stone to be adjusted up to an equivalent of 1000 grit. Its sharp and relatively small grits mean it sharpens efficiently even at low sharpening pressure. This means that the SB-250 Blackstone Silicon holds its shape exceptionally well over time and thus has a very long service life. SPECS AND DETAILS Grinding wheel dimensions Diameter: 250 mm (9 13/16") Width: 50 mm (1 15/16") Weight Shipping weight 4.39 kg (9.68 lb) Color Black Material Silicon carbide Grit Adjustable sharpening characteristics equivalent to between 220 and 1000 grit Warranty 2-year warranty Documents Grinding wheel mounting EN Patents To see all patents, please visit tormek.com/patents VIDEO Introduction: SB-250 Blackstone Silicon Tormek's SB-250 Blackstone Silicon has been developed to shape and sharpen HSS and other high alloy steels. Alan Holtham reviews the SB-250 Blackstone Silicon Alan Holtham, English woodturner and journalist, tries out the SB-250 Blackstone Silicon. INCLUDED IN THE BOX The SB-250 Blackstone Silicon comes fully assembled and ready to use. Instructions for the SB-250 Blackstone Silicon
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