Unhinged!

1164 Views 2 Replies 2 Participants Last post by Arbee, Nov 25, 2015

Arbee

Discussion Starter · Nov 23, 2015

Pardon the double entendre....

If you would be so kind, would you take a gander at the "Grand Central" table at this link and fathom a guess as to what the hinges are made from--assuming they're all made from the same thing.

https://vimeo.com/14001147

It almost strikes me as some scored plastic somehow glued on to the pieces.

By the way, for the math gifted, I think the largest you can make the 4 equidistant folds in the table, and still have it fold correctly is around half the distance of the table's radius when fully extended--but I can't prove that yet and I would love someone to suggest otherwise with rationale to back such a claim up.

Many thanks!!!!

Oh--and I'm thinking that in theory, this could be done with inset piano or butler hinges. Tell me what you think about that.

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Toolman50

· #2 · Nov 23, 2015

Thanks for sharing the video. That's an amazing puzzle of a project.
As for hinges, I'm guessing they used either a heavy canvas (like on the back of some roll-top desk) or a white rubber about the thickness of an inner tube. These would allow repeated folding whereas plastic would break after folding back and forth a few times.
Some projects are more fascinating than they are practical. This falls into that category.

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Arbee

Discussion Starter · #3 · Nov 25, 2015

Some things I've found since my original post:

Webbing strap based hinge:

http://www.stilsucht.de/08/2012/63-grad/

Model aircraft hinges for creating angled wing surfaces, stronger than you'd think:

https://www.youtube.com/watch?v=QpwEvmhpAjY

Linen hinging tape for book binding/repair:

http://www.amazon.com/Lineco-Adhesive-Linen-Hinging-white/dp/B0027A5E34

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