This is basically the bottom part of the prusa dual spool holder designed by hand in onshape.
It allows mounting the official prusa filament guide without having to use the dual spool holder. For example when you use dryboxes or standing spool holders.
Printed without support in the position in the 3mf file. i used 15% infill and .2mm layer height with a .4 nozzle.
The author marked this model as their own original creation.