Rail support for "USR - Universal Spool Rail" (MK1/MK2)
Update 22.09.2023
Because sometimes size matters…
Added new versions with only 3mm wall thickness instead of 5mm.
This gives us an additional 1.6cm of space for spools at the full expansion stage of the USR with 6x dual sliders and 2x single sliders.
The author remixed this model.
Redesigned to be used as a slider on a rod