I have some gears to make from Nylon or Delrin. The original gears are plastic basically tooth rings pressed onto nurled steel hubs. I know a guy who said he used to make them, he said he bored the Delrin ring 0.010" undersized and wider than the hub. He then warmed the Delrin up to 300 degrees, pressed the hub into the delrin, cut the teeth then turned the excess off the sides. As wondering if anyone had experience with this and any tips they may have,

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