Bi-stable von Mises thruss

Bi-stable structures undergo large deformation as they transition between two or more stable equilibrium positions. The most simplest structure bi-stable structure is a von Mises thruss. This model is fully functional and allows the demonstration of the snap through effect.

The screw & nut is based on this script: https://www.thingiverse.com/thing:193647

The thruss needs to be printed twice.