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I Forge Iron

Hand crank blower

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Okay, I have a Cannedy Otto Western Chief blower. The other day I noticed that when I was cranking it, it felt as if it was slipping. I took it apart and found that the big gear inside was slipping on its arbor. It looks as if the gears are friction set on the arbors, but it also looks as if there is a softer metal lining the hole in the gear; maybe to kinda wedge the gear to the arbor... My question is: Is there a softer metal lining the hole in the gear or should I just use a small pointed punch and close the hole around the arbor? This idea works for clock movements, but those aren't forge blowers... Any info is appreciated... thanks a bunch.

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