A revolutionary design in metal-cutting blades is changing the metal-working industry. These blades don’t cut like a knife. Instead, the blade is fixed in one position while the metal to be shaped spins on a lathe. This new-style blade stays sharp six times longer than the old blade design. And where titanium used to make the old-style cutting blades dull almost the second they were used, the new blades last up to 30 minutes.

REF.: Self-sharpening blade has edge. Science Digest, Mar. 1984. p. 86. Photo: Rat by Karsten Paulick_Pixabay.com

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