A small piece of natural jasper used to create slurry on sharpening stones. Helps activate the stone surface and improve control during finishing.
Sizes vary from 40×40×20 mm to 70×40×10 mm. Supplied in random size. Size selection is not available.
Purpose
Create working slurry
Activate stone surface
Accelerate finishing process
Refresh lapped stones
About the Material
Jasper is a dense natural stone with a microcrystalline quartz structure (Cryptocrystalline Quartz). It provides smooth, controlled polishing and a clean refined edge.
Natural stones do not have a fixed grit rating, but jasper typically performs in the range of approximately 8000–10000 JIS, depending on density and lapping.
Steel Compatibility
Suitable for carbon, stainless, Damascus, high-speed, and powder steels up to 63 HRC.
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