Diamond Sharpening Stones

ATOMA Diamond Sharpening Stones

Diamond sharpening stones are, if one takes into account their strengths and weaknesses, a real alternative to wet grinding wheels and sharpening stones. Conventional sharpening stones sooner or later become hollowed with use, while diamond stones remain flat. One cannot flatten the back of a chisel or plane iron on a grinding wheel, but a diamond stone is ideal for the job. They are also ideal for removing lots of material, to grind out a notched edge, for instance. But for honing an edge, sharpening stones are much better, as the diamond stones can not be made with a fine enough grit for a really good edge.

Never use diamond stones dry. This is bad for the surface of the diamond stone, and will not sharpen well, either. Wet the sharpening surface before every use! You should also be careful not to put too much pressure on the surface when sharpening, and absolutely not near the edges of the plate, as this can deform the plate and scrape off the diamond coating. More...

We are very happy to offer you these diamond sharpening stones, the Atoma brand, by the Japanese manufacturer Tsuboman. The manufacturer is known for its high quality and technically refined products -- very important with this kind of product, as there is a wide difference in the quality and durability of the different diamond stones on the market. They are solid, without the large holes in the plate one often finds, which can catch smaller blades and do a lot of damage to the edge. Their surfaces are in general well made, flat with evenly distributed and precisely graded diamond chips. The chips themselves are exclusively monocrystaline diamonds, which are much more expensive than polycrystaline, and are more durable. They are fused to the plate using an electrolytic process.

Diamond Sharpening Plates Atoma Economy
Diamond Sharpening Plates Atoma Economy
The fact that these are called "economy" tools makes you worry that they are perhaps not made using the best materials. That is not the case. It has to do with the manufacturing process. Originally thick aluminum or steel plates were coated with diamond chips. This is expensive and the plates were very sensitive to mishandling. Tsuboman took this into account and decided for this line to make the plates out of 1 mm thick stainless steel coated with diamonds and then used a double-sided adhesive tape to fix the plate to a 10 mm thick flat-machined aluminum plate. This makes for a product relatively easy to manufacture, and when the diamond plate is worn out, one has only to buy a new one and re-glue it to the re-useable base plate. This also makes for a lighter stone, 600 grams against 1000 grams for the original solid steel plate, a real savings in weight. This method also makes for an unusually flat surface compared to other similarly-priced stones. We laid a number of these plates on a certified flat granite measuring stone, and a 0.04 mm feeler gauge would not fit under the sharpening plate. We cannot guarantee this level of flatness with every Atoma plate we sell, but we can say that they are generally astonishingly flat.
Sharpening Surface 210 x 75 mm
Total thickness 11.4 mm

Diamond Sharpening Plate Atoma, 140 grit, Coarse
Order nr. 321200 cart
Price € 85.00

Diamond Sharpening Plate Atoma, 400 grit, Medium
Order nr. 321202 cart
Price € 77.00

Diamond Sharpening Plate Atoma, 600 grit, Fine
Currently not in stock!
Order nr. 321204 cart
Price € 77.00

Diamond Sharpening Plate Atoma, 1200 grit, Extra Fine
Order nr. 321206 cart
Price € 77.00
Replacement Diamond Sharpening Plates, Atoma Economy
These are made to replace the cutting surfaces of the Atoma diamond sharpening plates we sell above. But they can also be glued down to other backing plates of your choice. The backs are covered with strips of double-sided adhesive tape and glueing them down is easy and quick. The plates are made of 1 mm thick stainless steel, and with the tape the total thickness is 1.4 mm. Because the plates are so thin, you must take care when fixing them to a backing material, and the quality of the results depends a great deal on the flatness and stiffness of the backing plate you choose!
Sharpening Surface 210 x 75 mm

Replacement Diamond Sharpening Plate Atoma, 140 grit, Coarse
Order nr. 321201 cart
Price € 69.00

Replacement Diamond Sharpening Plate Atoma, 400 grit, Medium
Order nr. 321203 cart
Price € 60.00

Replacement Diamond Sharpening Plate Atoma, 600 grit, Fine
Order nr. 321205 cart
Price € 60.00

Replacement Diamond Sharpening Plate Atoma, 1200 grit, Extra Fine
Currently not in stock!
Order nr. 321207 cart
Price € 60.00
Atoma Sheet
Diamond Sharpening Plates Atoma Sheets
Diamond Sharpening Plates Atoma Sheets
Diamond Sharpening Plates Atoma Sheets
Diamond Sharpening Plates Atoma Sheets
Diamond Sharpening Plates Atoma Sheets
Diamond Sharpening Plates Atoma Sheets
These are very flexible, self-adhesive plates made of a copper foil coated with diamond chips. The total thickness is only 0.5 mm. They can be glued to surfaces in almost any shape, and also can be cut, with appropriate scissors to any shape you desire. They are useful for many different types of metal work. If they are used to sharpen tools, like chisels or knives for instance, one must be careful to avoid sticking an edge through the relatively fragile copper foil and damaging the surface. Do not sharpen in the direction of cutting edge or other sharp corners. The diamond coated foil comes in grits of 140 (coarse), 200 (semi-coarse), 400 (medium), 600 (fine), and 1200 (extra-fine).
Note: we do not have large quantities of the foil plates in stock!

Grit Dimensions in mm Order-Nr. Price
140 10 x 100 321220 cart € 17.00
200 10 x 100 321221 cart € 17.00
400 10 x 100 321222 cart € 17.00
600 10 x 100 321223 cart € 17.00
1200 10 x 100 321224 cart € 17.00
140 50 x 100 321230 cart € 39.00
200 50 x 100 321231 cart € 39.00
400 50 x 100 321232 cart € 39.00
600 50 x 100 321233 cart € 39.00
1200 50 x 100 321234 cart € 39.00
140 100 x 100 321240 cart € 72.00
200 100 x 100 321241 cart € 72.00
400 100 x 100 321242 cart € 72.00
600 100 x 100 321243 cart € 72.00
1200 100 x 100 321244 cart € 72.00
140 100 x 200 321250 cart € 175.00
200 100 x 200 321251 cart € 129.00
400 100 x 200 321252 cart € 129.00
600 100 x 200 321253 cart € 129.00
1200 100 x 200 321254 cart € 129.00
140 200 x 200 321260 cart € 249.00
200 200 x 200 321261 cart € 249.00
400 200 x 200 321262 cart € 249.00
600 200 x 200 321263 cart € 249.00
1200 200 x 200 321264 cart € 249.00
 
Dieter Schmid - Fine Tools
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