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Diamond Sharpening Stone - All You Need To Know

Updated on October 25, 2014

What is a Diamond Sharpening Stone?

Diamond sharpening stone is a sharpening stone coated with diamond abrasive. This kind of sharpening tools are known for cutting the edge pretty quickly. Diamond abrasive is used in many kinds of sharpening devices, for example in Chef's Choice knife sharpeners because of its efficiency. Please remember that you should regularly sharpen your knives, sharp knives are safer than dull ones and they're definitely easier to operate with.

Diamond sharpening stones (similarly to other sharpening tools) have at least two areas (or sides). The first one (the coarse one) is used to set the edge. It sharpens the blade quickly but it gives you a pretty rough edge. That's why every sharpening stone has also a fine side, which is used to polish the edge and make it razor-sharp.

How To Sharpen a Knife Using a Diamond Sharpening Stone

Using a diamond sharpening stone is similar to using other sharpening stones. First thing you should remember is that you can sharpen blades on either watered or wet surface of the stone. Don't lubricate it with any kind of oil, it can clog its surface and the sharpening stone won't work as good as it's supposed to. There are basically three steps to sharpen a knife using a stone.

1. Sharpen with the coarse side.

Hold the blade at about 15-20 degree angle to the stone and draw it over the stone while maitaining the mentioned angle. Repeat the same number of strokes for each side of the blade. Import tip: try placing the sharpening stone in a way that you won't have to pull the knife directly towards you. That's just because of the safety reasons.

Clean the blade before proceeding the the next point.

2. Sharpen with the fine side.

Now you simply need to repeat the same sequence of activities as described above, but using the fine side of the stone. After you're done remember to clean the blade with a cloth.

3. Clean the stone.

It's very important to clean a diamond sharpening stone (just as other sharpening stones) after every use. You simply need to rinse the stone with water. It'll remove any metal filings that might be left on stone's surface. Rinsing is important because those filings could rust. After rinsing you should dry the stones - they should be stored dry. If your diamond stones become dirty you should clean them. An old tooth brush with a household abrasive cleaner would do the trick.

How to Use a Sharpening Stone

Here's a great video about how to sharpen a knife using a sharpening stone. Take note that you can moisten a diamond sharpening stone using water or keep it dry (don't use oil!), it's up to you..

DMT Diamond Bench Stones

DMT (Diamond Machining Technology) is one of the producers that focuses on manufacturing sharpening tools that have diamond coated areas used to sharpening. There is a variety of great DMT products on the market. There's only one thing you need to remember - great diamond sharpening stones are pretty expensive. All of them are much more expensive than this cheap sharpening stone. In case of sharpening tools - great qualit has its price.

How To Use DMT Diamond Bench Stones - Video

DMT WM8EF-WB 8-Inch DuoSharp Plus Bench Stone-Extra Fine/Fine With Base

Product features:

  • counter or bench use for sharpening a variety of knives and edges plus a continuous diamond zone for small and pointed tools
  • two sided sharpening with fine for a razor sharp edge and extra-fine to polish and refine an edge
  • sharpens knives faster than conventional stones with DMT's monocrystalline diamond surface
  • no oil is needed-sharpen dry or with water

DMT WM8EF-WB 8-Inch DuoSharp Plus Bench Stone - Extra Fine/Fine With Base
DMT WM8EF-WB 8-Inch DuoSharp Plus Bench Stone - Extra Fine/Fine With Base

"I had a DMT fine/medium and worked with hard Arkansas to finish. I decided to try a DMT fine/extra fine, and got this with the holder for a nice price on Amazon.

This is a great setup. You can hold by the handle or set on a counter, and changing stones is quick and easy. What took me hours to do before DMT on aluminum oxide and hard Arkansas now goes very quickly, thanks to DMT."


Looking forward to comments!

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      Sabrina 3 years ago

      jennifer z / I agree with Theresa. I've been using Prismacolors for nearly 30 years but the qaliuty has certainly decreased. I've just ordered a set of Faber-Castell Polychromos pencils recommended by other colored pencil artists. I do need an electric sharpener but I can't seem to find one that nearly everyone likes and doesn't cost a fortune. Once I'm able to move back to DuPage County I'd love take your class, Theresa. Perhaps by then Prismacolor will have corrected the long-standing breakage problem.