Parametric bracing frame vertex

The inherent floppiness of the Prusa frame annoys everyone. Here's my attempt at fixing it. This thing keeps the same rod spacing, though you will gain a little Z height and Y travel at the expense of some X clearance, if the nuts are right at the end of your rods.

Also, this thing can produce accurate copies of the Huxley vertex (by editing the scad file), which is not available in openscad format, I believe. Which also inspired me to make this, as I think they look cool.

Detailed descrip