Comment on Mechanical Pencil: An illustrated celebration of the engineering around usComments−BugsJustFindMe3moI find it funny that such a careful diagramming and description of how a mechanical pencil works forgets to describe how the lead manages to stay in place when the mechanism is released instead of falling out (tight tolerance at the opening).
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I find it funny that such a careful diagramming and description of how a mechanical pencil works forgets to describe how the lead manages to stay in place when the mechanism is released instead of falling out (tight tolerance at the opening).