Turning a straight shank on a taper shank endmill. The shank was so hard neither a file nor high-speed steel parting blade would even scratch it.
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@f.hababorbitz6 ай бұрын
I'm surprised what carbide can do to hard steel. I had the inner race of a ball bearing welded to a 1-1/8" shaft and was able to remove it by turning it on the lathe with brazed carbide tooling, and cheap stuff.