The Atoma #140 is perfect for repairing chipped knives and flattening of Whetstones.
The main benefit of using an Atoma plate over a whetstone is its ability to remain flat and will last for an extended amount of time. The Atoma #140 is a staple grit for general whetstone flattening from low grits right up to medium grits.
General way to use the plate is to mount the whetstone in your stone holder then rub the Atoma on top of the whetstone in various directions till the stone is lapped.
Atoma Diamond Sharpening Plates are products of the company Tsuboman, a superb Japanese manufacturer with very refined diamond products.
The Atoma plates are made of mono-crystalline diamonds with the cutting abrasive surface mounted on a stainless steel base which is 10mm thick.
It's base is machined to be extremely flat so the Diamond plate remains flat.
The quality and durability of these Atoma plates are of the highest available on the market, with precision made surfaces that have high precision uniformity. These plates remain flat after continued sharpening use.
The diamond plate can be replaced after a few years without buying another baseplate, as they are adhered using a strong double sided tape.
Atoma Diamond plates can be used dry, or with water.
Clean the plate thoroughly after use, remove any water if used when sharpening, and allow to try fully to prevent any rust.