Goals:
This is a remix based on the MMS by Ryan Huang - yyh1002 at https://www.thingiverse.com/thing:2194278/. The clip section is remixed from the MMU2s Mount by Prusa. There are 8 models total including female and male joints horizontal and vertical orientation and 40mm for top rail and 50mm for side rail. I added wing supports to the 50mm mounts to add lateral stability.
Note: All the design work for this remix was done within PrusaSlicer with creative cutting, scaling, and merging of multiple STL files.
These were my print settings; YMMV.
Preset from PrusaSlicer 0.20mm Speed MK3 and supports everywhere. Orientation with MMS mount on plate.
Prusament PETG 250/90 heat settings.
The author hasn't provided the model origin yet.