Span Support Generator for MPCNC rails

This is a support generator I created for my large MPCNC. This is best used before tightening down the towers because it allows you to get a perfect height all around.

Note that according to the creator of the MPCNC top rails should be 27.5mm higher than the bottom rails for all models. I found this number to be closer to 26.9mm on mine, so YMMV.

The Customizer view renders the the image a bit oddly. Don't worry, the weird top and bottom tabs won't be printed.