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Rotegrity Springs by TaffGoch Rotegrity Springs by TaffGoch
Rotegrity Springs by TaffGoch (print image)

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Geodesic sphere
Reciprocal-frame
"Rotegrity" or "nexorade"

• Polyhedral basis: Icosahedron
• Tessellation: Class-II
• Frequency: 2v{1,1}

• Modeled in
:icongooglesketchup:

• Rendered in
:iconkerkythea:
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:icontechnohippy:
Technohippy Featured By Owner Mar 31, 2011  Hobbyist Digital Artist
still can't get my head around the fact you do this in sketchup... good work fella
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:iconrndmodels:
RNDmodels Featured By Owner Mar 21, 2011  Professional Artisan Crafter
each of the pieces that have the 'double coils' would need a pretty accurate angle between the 3 segments, otherwise it would explode like a mousetrap halfway thru getting it assembled! ...I could just hear the Dr in the ER looking at the wounds saying "what the...?"
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:icontaffgoch:
TaffGoch Featured By Owner Mar 22, 2011
I have considered sculpting this in copper pipe. (Advantage: copper is easily chrome-plated.)

There are only a few unique parts, replicated & rotated, using icosahedron rotational symmetries. Producing multiple identical parts would benefit from the use of jigs.

And, yes, I'd have to closely match "spring" angles, even though copper pipe wouldn't be that "springy." SketchUp makes the measurement of precise angles pretty easy.
______________

I've wondered, if one was "realized" with spring-wire, how well would it bounce? The model shares the characteristics of tensegrities, which are pretty flexible, but recover initial shape, readily.

To be truthful, I respectfully "fear" the hazards presented by my tablesaw more than I would fear a geodesic spring explosion.... :laughing:
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:iconrndmodels:
RNDmodels Featured By Owner Mar 22, 2011  Professional Artisan Crafter
Thats a good question about bouncing. Maybe not much at all, since they are on so many axis vs all parallel? Then again, maybe it has to be really heavy (or springs really gentle) for the impact to cause so many springs to give all at once? interesting...
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:iconrndmodels:
RNDmodels Featured By Owner Mar 21, 2011  Professional Artisan Crafter
Thats a good trick, I like that
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:icontaffgoch:
TaffGoch Featured By Owner Mar 21, 2011
Ron,

Seemed like more of a chore, at the time, rather than a trick.

The real chore would be trying to construct a physical sculpture of the design! (Although, I'd give it a go, in consideration of a large commission.) ^_^

-Taff
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Submitted on
March 21, 2011
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