Nice model! Instead of using another 2x M6 threaded rods, i've changed it to use 4x heat inserts and bolts. Works just as well, but is cheaper and less effort. No need to cut new rods to length.

Printed quite well on a Prusa mini diagonally. The only thing is that the M6 nut holes were a bit too small, so I heated them up and used an M6 threaded rod, a washer and another nut on the other side to pull them into the base.