Are diamond stones really made of diamond?
Yes, our DMT® diamond stones are indeed made of diamond. These diamonds are manufactured, not natural, and come in various sizes ranging from 120 microns to 3 microns.
What is a monocrystalline diamond and why is that important?
Monocrystalline diamonds are high-quality diamonds that are not fractured and are uniformly sized. DMT® uses these diamonds bonded to a nickel backing for durability and a flat surface. This is crucial as fractured diamonds, like polycrystalline ones, wear out faster.
What lubricant do you recommend for diamond stones?
We suggest using water for lubrication and to wash away metal filings (swarf). It’s effective, easy to clean up, and widely available.
What is the difference between DMT Duo-Sharp and DMT Dia-Sharp stones?
DMT Dia-Sharp stones feature a continuous diamond surface bonded to machined steel, ideal for very flat surfaces and pointed tools. DMT Duo-Sharp stones have an interrupted diamond surface, with recesses to hold swarf, making them faster in many situations and more portable due to a plastic base.
What do the different colors of DMT® stones indicate?
The colors indicate grit size and coarseness: Extra Extra Coarse (silver), Extra Coarse (black), Coarse (blue), Fine (red), Extra Fine (green), Medium Extra Fine (6 micron, 4000 mesh), and Extra Extra Fine (tan).
Why is uniformity of grit size important on diamond stones?
Uniform grit ensures efficient sharpening. Coarse grit on a fine stone, or vice versa, hinders effectiveness. High-quality diamond stones like DMT® ensure grit uniformity, crucial for desired sharpness.
How do I care for my DMT® Diamond Stones?
Rinse with water after use to remove metal filings. Dry thoroughly before storing. Use a toothbrush and abrasive cleaner if dirty.
Where are DMT® Diamond Stones made?
All DMT® products are proudly made in the United States.
Do you have a guarantee on your DMT® stones?
Yes, we offer a guarantee on our products. If you receive a defective item, contact us for assistance.
Are diamond stones good for flattening water stones?
Yes, DMT® stones can flatten water stones effectively, especially the extra coarse or coarse stones. However, the DMT Dia-Flat Lapping Plate is preferred for precision and aggressiveness.
Are DMT® stones flat?
Yes, DMT® diamond stones are designed to be extremely flat, making them ideal for flattening other tools like chisels and plane irons.
How long will the diamond last on my stone?
With proper maintenance and care, DMT® diamond stones can last for years, even decades. Regular cleaning and storage are key to longevity.
How do I know when my diamond stone is worn out?
Thoroughly clean the stone, then test it on the side of an old glass jar. If it scratches or frosts the glass, there are still diamonds left for sharpening. If not, it may need replacement.
