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Crankshaft hardening machine.
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Previously:
https://www.homemadetools.net/forum/...0885#post73315
https://www.homemadetools.net/forum/...1800#post94762
https://www.homemadetools.net/forum/...571#post123106
Bends the crank a lot ,check out the wobble as its heated
Cast Iron crankshafts were turn into NI ,(Nodular Iron) cranks by heat treating, back in the day 1964-1974 ,by Generous Motors, i wonder if they did it this way, or put a big load in a giant oven.??us Pontiac V8 guys are always on the lookout for crankshafts with the N cast on a counter weight, for our motors, they are really strong crankshafts..