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High-quality diamond lapping plate with deep-blasted glass. Maximize capability of medium and fine sharpening stones.

Every time a blade is sharpened on a sharpening stone, the stone itself changes shape, so over time, the planes at the blade's edge also change.

That is why it is so important to keep the sharpening stone itself flat. Apply the DGLP, and you will enjoy sharpening as never before. The DGLP uses glass for its base, and this is what produces such high precision on the resulting sharpening stone plane.

Restores medium stones and finishing stones to their original capabilities, allowing you to sharpen with the finesse of a master craftsman. Glass-based lapping plate High degree of surface flatness facilitates highly accurate lapping   
The lapping plate fits directly on top of the stone holder (Sold separately)

     

  • Diamond Lapping Plate in box
  • Product name: DIAMOND GLASS LAPPING PLATE
  • Product number: 50100
  • Dimensions: 253 x 80 x 24 mm
  • Working surface: 245 x 72 mm
  • Weight: approx. 750g
  • MADE IN JAPAN 

Step 1
The stones you are intending to lap should be immersed in water for 2 to 3 minutes before starting work on them.
When lapping non-Shapton stones, you should ensure the stones absorb plenty of water first.

Soak Stones

Step 2
As a guide, use a pencil to draw a grid on the stone surface to be flattened.

Mark with pencil

Step 3
Place the plate somewhere stable and splash it with water.

Wet plate

Step 4-1
To lap a stone, lay it on the lapping plate and slowly slide it forwards and backwards, then diagonally, using the whole surface evenly. Any time slurry accumulates in the grooves, rinse it off then resume lapping.

Lapping direction

Step 4-2
You can also lap a stone by laying the lapping plate on the stone. In this case, you should slide the lapping plate forwards and backwards, then diagonally. Parts where the lines get erased show where the lapping plate has made contact, i.e. where flattening has been performed correctly.

Lapping Direction

Step 5
Once you have finished lapping, rinse off any slurry promptly before putting the plate into storage. We also recommend using a brush at this time.

Clean after use

Function 1
Correct and flatten the whetstone surface. Each time a blade is sharpened, the whetstone surface loses some flatness. The blade contacts the central area more frequently, meaning that it ends up somewhat concave. Distortion of the whetstone surface is a cause of uneven sharpening, but can be corrected by using a Diamond Glass Lapping Plate to restore the flatness.

Stone Dishing

 

Function 2
Cure clogging. ‘Clogging’ refers to swarf from blades or whetstone particles covering the abrasive protrusions on a stone’s surface. Once a whetstone is clogged, blades lose contact with its surface protrusions and it becomes impossible to sharpen them.

Lapping the stone’s surface scrapes away the clogged parts and cures the problem.

Clogged Stone Surface
Function 3
Even up surface roughness Depending on what you use to correct a whetstone, the lapped areas may sometimes actually end up rougher. Any scratches on the stone surface will affect the finish of your sharpened blade, and the finer the whetstone, the further it will deviate from its intended performance. The Diamond Glass Lapping Plate allows you to even up the roughness across the whetstone’s surface, so both medium stones and finishing stones can be restored to their original capabilities.

Stone Scratches


 

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