Sharpening flat edges is relatively easy; trying to match the curve of a gouge requires more skill and a bunch of curved stones. DMT is trying to make it easier to keep a keen edge on your curved tools with their new Diamond Wave.
While it looks like a piece of metal that’s had a bad day, it’s actually a combination of convex and concave surfaces coated with a micronized mono-crystalline diamond coating. The curves vary precisely from a radius of 0.0625″ to 1″, which gives it the ability to sharpen a wide range of curved tools. You can use the Diamond Wave dry or with water.
DMT makes the Diamond Wave in the USA. Available in fine (25-micron/600 mesh) or extra-fine (9-micron/1200-mesh), pricing starts at $47 shipped for either “stone.”
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Don’t throw out your favorite beer mug just because you chipped the rim — with DMT’s Crystal Saver file you can smooth the sharp edges and keep on drinking without cutting up your lip.
The Crystal Saver is a 4″ long half-round nickel file coated with a coarse grit of diamonds. DMT gave the file a fake crystal handle — probably so you’ll put it in the silverware drawer, not the toolbox.
It’ll smooth jagged edges on hard material such as glass, china, or ceramic. Just moisten the file and take a few light strokes over the chip with the flat side. Use the round side to take care of sharp dips.
You’ll pay around $18 for the Crystal Saver.