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T-7 Blackstone Silicon Replacement Stone

Item #149544

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Product Information:

The SB-250 was developed for hard materials and fast shaping. Its faster steel removal is an advantage when grinding tools with a large bevel surface and where the grinding pressure is limited such as with planer blades and woodturning skews. It can also touch up carbide which has an established shape. The grit is 220 and can be graded with the stone grader to make it a finer, 1000-grit stone.

Tormek Blackstone Silicon has been developed for shaping and sharpening high-speed steel and exotic alloyed steels. It can also touch up tungsten carbide. It does not offer faster steel removal on ordinary carbon steel. The combination of abrasive hardness, shape and grain size is optimized to work efficiently at the Tormek system’s low RPM. Its faster material removal is an advantage especially when shaping tools with a large bevel surface, where the grinding pressure is limited, for example, planer blades and woodturning skews. The 220-grit size is the same as the Tormek Original Grindstone, but can be altered to work like a 1,000-grit stone with the Tormek Stone Grader (SP-650). Thanks to its sharp and relatively small grains, the Blackstone removes hard steel efficiently, even at low grinding pressure. The Blackstone Silicon also offers exceptional wear resistance. It can even touch up tungsten carbide, where the tool already has an established shape.

  • Blackstone silicon grindstone for Tormek T-7
  • Developed for shaping and sharpening HSS and exotic alloyed steels
  • 220-grit size is the same as the Tormek Original Grindstone
  • Removes hard steel efficiently even at low grinding pressure
  • Blackstone silicon also offers exceptional wear resistance
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