X_Carriage_2.1.3 - STD - SquareNut

I had problems with the hexagonal M3 nuts sometimes rotating in the PET-G so I made this.

This is the "X_Carriage_2.1.3 - STD" by vergienc but with place for square nuts instead of hexagonal. All credit goes to original creator. Like the original is for 8mm rods, bearings that are 15mm wide.

The holes for the M3 nuts are 6x6x3mm and will take most of the variations.
For this to work I had to move the holes inside the bushing holder to the same height as the ones in the middle. This means