Mechanical Pencin: A website about the hidden engineering in everyday objects(mechanical-pencil.com) |
Mechanical Pencin: A website about the hidden engineering in everyday objects(mechanical-pencil.com) |
I dropped in a suggestion to do one on an umbrella. There's a lot going on in these. One can study the differential geometry of surfaces. The mechanism design of opening and closing.
I find both the spring ones (push button) and the ones without spring quite fascinating. In fact the ones without a spring has implicit ones imposed by the bending of the spokes.
The description above comes from the following post on mastodon: https://merveilles.town/@rek/116658587354593919