Special stone for hard materials. Fast high speed steel design. Even for light carbide sharpening. Tormek "Blackstone Silicon" stone developed for hard materials and fast steel machining.
Suitable for e.g. large blade surfaces such as planer blades, where the grinding pressure is limited.
Grit size is the same 220 as in the original Tormek SG-250 stone. The sharp grain removes the substance effectively despite its small size.
The SP-650 stone adjuster can be used with the stone.
- Size 250x50mm (hole 12mm)
- Grit 220
- Max speed 150rpm.