Stop and think about comparative hardness: Steel knives get dull when carving wood or cutting paper.
is that because the edge is worn or because the very thin cutting edge is bent from use?
Stop and think about comparative hardness: Steel knives get dull when carving wood or cutting paper.
is that because the edge is worn or because the very thin cutting edge is bent from use?
As a mechanic I see rubber seals cut grooves into hardened crankshafts, axle shafts and the like all the time.
One look with a Jeweler's Loup and you can see that the edge is dulled from use, not bent.is that because the edge is worn or because the very thin cutting edge is bent from use?