This is a rework of this model, for TBGS from trianglelab
https://www.printables.com/model/349091-blv-cube-carriage-eva-based-for-volcano-rapido-not
You will need the same bolts, with some minor changes:
For the upper part of the bracket you will need 2x m3x40 instead of 2x35. 4x M3 10mm needed for the mgn9h. 2x Square nut needed for fit the tbgs on the bracket with 2x M3 16mm bolt. 2x M3 12mm blots for the belt lockers
EDIT: V2 model relased.
-)I took advantage of the smaller size of the MGN9H compared to MGN12H, for a better belt allignment. The lock system is changed and stronger.