I bought these to sand aluminum. Nothing hardened and they were polarized after one try. I mean, the whole long square lace was soft all around. Out of curiosity, I tried them on soft pine wood. "Pointed" barely lasted until the simple word "TEST" was engraved at the end, 1/4" deep and 2" high. I would never touch these pieces again! They do NOT meet the stated standards. I've had more success with ceramic Dremel bits, which I have no idea what they're for, they just come standard with every Dremel.
Carbide Tungsten Double Rotary Grinder Cutting Tools and Cutting Burrs
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Kutzall Original Cylinder Rotary Burr, 1β8" Shaft, Fine - Woodworking Attachment For Dremel, Foredom, DeWalt, Milwaukee. Abrasive Tungsten Carbide, 1β4" (6.3Mm) Dia. X 1β2" (12.7Mm) Length, C-14-EG
9 Review
8PC Carbide Burr Set 1/4" Shank, Tungsten Double Cut Rotary Die Grinder Bits - Cutting Burrs For Milwaukee, Dewalt And Die Grinder Accessories - Wood Carving Metal Working - Free Screw Extractor Kit
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Kutzall Extreme Cylinder Burr - Very Coarse Woodworking Abrasive Tungsten Carbide For Dremel, Foredom, DeWalt & Milwaukee
5 Review