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#86단계의 변경 사항

robertcbaruch- 에 의해 수정

편집 승인됨 완료자 robertcbaruch

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[* red] The only thing now preventing the two frames from being separated is this gear.
[* black] It is fixed to the shaft with a taper pin.
[* blue] A taper pin is a pin that tapers from a wide end to a narrow end used to affix parts onto a shaft. The machinist would put the gear on the shaft, drill a hole, then taper the hole by using a tapering reamer. Then the machinist would put the taper pin in, give it a few gentle whacks with a hammer, and grind off any end sticking out too much.
[* icon_note] Taper pins were better than set screws because a taper pin leaves no possibility for the parts to rotate.
[* icon_note] They're also a '''pain''' to remove after 90 years.

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