Toradex Viola + Ipê Stackable Stand / Support

This is a stand for the Toradex Viola Plus embedded development board with the add-on board Ipê. It has the following features:
* It's stackable, which means that if you put one over the other (with the boards), they will perfectly fit and snap;
* It's discreet, meaning no extra edges getting in the way;
* It spends a small amount of filament, so it's economic;
* It has exact fittings for nuts (M3) and screws (M3x8)
* It's robust, it was even submitted to finite element analysis to solve re