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Restore sharpening stones to their original flatness and keep them in prime condition
Purpose
Through use, your Sharpening Stones will show signs of wear. They may lose their flatness after a time. The Silicon carbide Hapstone leveling is used to restore your stones to their original flatness, keeping them in prime condition.
Set
Set consists of 5 grit types of silicon carbide: 80 grit (200/160 µm), 120 grit (125/100 µm), 280 grit (60/40 µm), 500 grit (14/10 µm), and 1000 grit (5/3 µm).
Use
To use, sprinkle about a ½ teaspoon of the silicon carbide on the glass or a mirror, and add a little water. By rubbing the stone against the abrasive grit, you will grind the high spots of the stone down until it is level again.
Mirrors
The set also includes 5 pieces of mirrors with high quality rubber feet to prevent slipping during leveling. The mirrors have the dimensions 8" × 8" (200×200×4 mm) and are sanded on the sides to avoid injuries.
How to use
Take a slate pencil and put crosshatch pattern to the surface of the stone. Never skip this step. Your goal is to get rid of crosshatch completely. If you notice left-over of pattern somewhere, it means geometry is not flat yet.
Always add water to make a suspension, not dry SiC. Try to use glass area evenly. Your glass will wear over time because SiC affects glass too.
For hard stones, coarse SiC will be the major time consumer. When SiC disintegrates, put another pinch (refresh). If there is too much suspension, clean your glass. Use a straight edge or metal ruler to check flatness. If you are not sure, make crosshatch pattern again.
The abrasive hygiene should be a priority. Don't let single coarse particle to remain in fine lapping.
Fractions
The abrasive hygiene should be a priority. Don't let single coarse particle to remain in fine lapping.
Silicon carbide 80 grit (200/160 µm) — flattening of very coarse stones (60 - 150 grit)
Silicon carbide 120 grit (125/100 µm) — flattening of any stones (180 grit and above)
Silicon carbide 280 grit (60/40 µm) — lapping of medium waterstones (400 - 1000 grit)
Silicon carbide 500 grit (14/10 µm) — lapping of fine waterstones (2000 grit and above), natural stones, alumina ceramic
Silicon carbide 1000 grit (5/3 µm) — lapping and honing of ultra-fine natural stones and sintered alumina ceramic
