Heptagonal wreath glowing in the night

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Heptagonal wreath glowing in the night

Postby Eric » Tue Dec 01, 2020 11:35 pm

Hi!

While discussing with Peter in the tetrahelix thread I brought out my photos of the heptagonal crown I made some time ago.
I might as well share them here.

My first version, based on the 2-flying-saucers-crash shape ;) (EDIT: it's called an Oloid) looked like this (with a horrible choice of colors :oops: because I had scraped the bottom of the drawer in search of the last rods I had left):
20200826_015352.jpg
First version with awful choice of colors

As I was looking for a stripped down version I decided to remove a few rods from the outer edge and and I got this rather stylish version:
20201106_113258_2.jpg
Stripped down version

20201106_113224.jpg
Stripped down version from the side
Last edited by Eric on Thu Dec 31, 2020 12:33 am, edited 3 times in total.
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Re: Heptagonal wreath

Postby Eric » Tue Dec 01, 2020 11:46 pm

And I made some night shots (in the bathroom actually) ;)

By hand:
20201106_103351.jpg
Held in one hand, phone in the other ;-)

And then on the floor but still with my phone. Not so bad eh?
20201114_142929.jpg
Yes I have some more glowing rods than others ... the vagaries of second-hand market ...

20201114_143706.jpg
upside down, reverse effect
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Re: Heptagonal wreath glowing in the night

Postby Wagyx » Tue May 30, 2023 7:45 pm

Here are the models.
With the central heptagonal antiprism, the deviation on the length of edges is 1% which is barely noticeable due to variations in the manufacturing process of balls and rods.
When I constrain the model to have edges of unit length, the two heptagons do not form an heptagonal antiprism anymore. I have included both models.
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