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Product details

The Tormek SB-250 Blackstone Silicon is designed to effectively shape and sharpen HSS and other high alloy steels. This makes it a popular choice among woodturners, thanks to its ability to efficiently remove material from hard woodturning tools. With an adjustable range of characteristics, it is equivalent to grit sizes between 220 and 1000.

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 enables efficient use of the SB-250 Blackstone Silicon on the Tormek machine at low rpm speeds. Its increased abrasiveness is particularly beneficial for shaping larger beveled tools and sharpening surfaces with low grinding pressure, 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 Blackstone Silicon SB-250's sharpening properties match those of a 220 grit stone. By adjusting the surface with the SP-650 Stone Grader, it can reach a 1000 grit equivalent. With sharp and fine grits, it can efficiently sharpen even with low pressure. This results in the SB-250 Blackstone Silicon maintaining its shape and having an exceptionally long lifespan.

Grinding wheel dimensions

Diameter: 250 mm (9 13/16")
Width: 50 mm (1 15/16")

Weight

Shipping weight 4.39 kg (9.68 lb)

Colour

Black

Material

Silicon carbide

Grit

Adjustable sharpening characteristics equivalent to between 220 and 1000 grit

Warranty

2-year warranty