Q: Which grit do I start with?
Use 90x or 180x to shape a stone, then use 280x to true it.
05M2007 - 90x Lapping Grit, 2 oz
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Silicon carbide is ideal for flattening oil and water stones or lapping plane bottoms and blades. Just sprinkle the grit on a piece of glass or a steel lapping plate, add a shot of oil or water (as required), and lap the item flat. This fast and easy process lets you keep all of your stones dead flat.
90x is used for most applications, while the finer grits are used to put a silky finish on plane bottoms or blades. Grits are available individually or as a set of five 2 oz containers of 90x, 180x, 280x, 400x and 600x and instructions. The 90x is also available in a larger 4 oz container.
Using PSA-backed plastic laminate sheets on glass speeds up the process, but is not mandatory.
Made in Canada
Use 90x or 180x to shape a stone, then use 280x to true it.
No. Grits finer than 280x imbed in the stone and contaminate it. The finer grits are for flattening soft metals, blades and soles, as well as conditioning plane soles and blades.
A purpose-made grooved gray iron lap is best, then a milled gray iron casting, plate glass, a mild steel plate or close-grained hardwood.
Lap water stones on plate glass with water only, since oil ruins them. Ferrous and hardwood laps take oil.
Five 2 oz containers of 90x, 180x, 280x, 400x and 600x silicon carbide, plus instructions.
| Materials | Silicon carbide |
| Dimensions | 90x, 180x, 280x, 400x or 600x grit |
| Compatibility | Compatible with oil stones, water stones, plane soles and blades |
| Grit | 2 oz; 4 oz (90x) |
| Includes | Lapping grit; instructions |
| Package Quantity | 1 item or set of 5 |
| Country of Origin | Canada |
| Warranty | Lee Valley Satisfaction Guarantee |
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Lapping Grits
Silicon carbide is ideal for flattening oil and water stones or lapping plane bottoms and blades. Just sprinkle the grit on a piece of glass or a steel lapping plate, add a shot of oil or water (as required), and lap the item flat. This fast and easy process lets you keep all of your stones dead flat.
90x is used for most applications, while the finer grits are used to put a silky finish on plane bottoms or blades. Grits are available individually or as a set of five 2 oz containers of 90x, 180x, 280x, 400x and 600x and instructions. The 90x is also available in a larger 4 oz container.
Using PSA-backed plastic laminate sheets on glass speeds up the process, but is not mandatory.
Made in Canada
