Corner Block Lock v2

thingiverse

The base is equipped with a flat surface for securely fitting the nut or bolt head. A precisely aligned hole of 9/32's diameter was drilled through both EMT tubes and support blocks to establish strong connections. Twelve-inch threaded rods, measuring 1/4-20 in thickness, were firmly sunk into the torsion box hard points. With a coupler or longer threaded rod installed, additional spacers can be employed, expanding usable Z height.