DMT Dia-Flat Lapping Plate

WOOD magazine rating


Dia-Flat™ Lapping Plate designed to easily flatten all conventional and waterstones in less time than other methods.
Using the new revolutionary DMT® Diamond Hardcoat Technology™, this lapping plate outlasts any other diamond coating in the market. With a consistent, aggressive diamond surface and precision ground, hand certified flat to +/- 0.0005”, the Dia-Flat™ Lapping Plate assures precise results when flattening stones. It's extra-large surface area makes it easy to use.

Size: 10" x 4" x 0.375" (254mm x 102mm x 10mm)

On a special order basis, DMT is offering a 95 micron / 160 mesh lapping plate made with the same Diamond Hardcoat Technology™ and precision ground, hand certified flat to +/- 0.0005" plate as the standard Diaflat™ Model.

WOOD magazine review

Flatten hand tools and sharpening stones fast

Review Summary

As a big fan of hand tools—some co-workers accuse me of never plugging in a tool—I really appreciate how DMT’s Dia-Flat lapping plate saves me time when flattening and sharpening chisels, planes, and plane irons. This 4×10" diamond-coated steel bar lets me flatten a new plane’s sole or dished-out waterstones, ceramic stones, and even hard-as-a-rock (pun intended) oilstones in less time than it takes with other lapping media.
And without flat stones, you’ll never put a perfect edge onto your tools. The 120-grit diamond abrasive cuts quickly without clogging, and doesn’t leave deep scratches. After using it, I simply rinse it off, pat it with a towel, and allow it to air-dry to prevent rust. Best of all, after months of use it still cuts as fast and effectively as it did when new. —Tested by John Olson, Design Editor

Detailed Ratings

out of 5





Ease of Use




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