硝子修正器 Diamond Glass Lapping Plate

Restores medium stones and finishing stones
to their original capabilities,
allowing you to sharpen with
the finesse of a master craftsman.

Boron-free process

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Glass-based lapping plate

High degree of surface flatness facilitates highly accurate lapping

Diamonds electrodeposited on the lapping face

Quickly bring your whetstone’s surface to optimum condition

Function

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.

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.

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.

Spec

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

How to use

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.
Step 2
As a guide, use a pencil to draw a grid
on the stone surface to be flattened.
Step 3
Place the plate somewhere stable and splash it with water.
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.
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.
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.

FAQ

We recommend that you lap it any time a blade is to be sharpened.
Keeping the sharpening surface in top condition helps maximize the sharpening stone's performance.

No. These lapping plates are not recommended for use with diamond electrodeposited sharpening stones because the surfaces can be damaged.

As a guide, use a pencil to draw a grid on the stone surface to be flattened.
Parts where the lines get erased show where the lapping plate has made contact, i.e. where flattening has been performed correctly.

A Diamond Glass Lapping Plate is usually good for around 1,000 to 3,000 applications.

DGLP can only be used for flattening fine stones of 30 micron class or below (500 or above).

There are concerns about boron’s impact on the environment.
Boron-free plating processes are therefore more environmentally friendly.