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Robert - your new model of Ten Tetrahedra

Posted: Mon Feb 03, 2014 9:02 pm
by oxenholme
The dart shaped facets are divided down the middle as you are using two colours for each.

Presumably you are double-tabbing, so the dart shaped facets will effectively be hinged down their middle.

How does this affect the overall rigidity of the model? Did you need to use any internal bracing?

Posted: Wed Feb 19, 2014 6:22 pm
by oxenholme
I've answered it myself!

I'm 11/12 of the way there, and it's getting pretty rigid.

Posted: Wed Feb 19, 2014 8:23 pm
by oxenholme

Posted: Fri Feb 21, 2014 3:01 am
by robertw
Looks great! What answer did you come up with for internal bracing?

You can see what I did here:

Posted: Fri Feb 21, 2014 7:40 am
by oxenholme
I didn't use any.

I try to avoid using internal bracing. It is essential for 5 Cubes, but all the others have proven to be rigid.

Have to admit that 10 Tetrahedra is a big disappointment. Lots of lovely colour, but the shape is a bit too much boring dodecahedral.

It's not a proper compound by my rules as it's 5 left hand oriented and 5 right hand oriented tetrahedra.

Nevertheless, I've made it and it's sat filling space in the display cabinet.