This is a more compact version of my original spool holder.
https://www.printables.com/model/801038-rack-it-spool-holder

This is designed to hold 6 rolls of filament in the RACK IT 1000KG shelving system.

The old design required screwing the rods in (which was difficult), this version snaps the rods into place. The old version required keying into two sets of hooks, this one only uses one.

I have left the 8mm holes (95mm centre to centre) for additional accessories or decoration. I use this to mount my PITFT70 screen case.

I have included an end cap for the smaller holes and the "RACK_IT_SPOOL_HODLER_End_Cap.f3d" for designing covers for the smaller holes (and the larger holes).

Design can be mirrored for the opposite side.

You will require 2x 600mm M8 rods, I purchased the one linked below and cut it into two for my rails. These are perfect for using any roller with 608 bearings.
https://www.bunnings.com.au/macsim-m8-x-1-2m-hot-dipped-galvanised-threaded-rod_p2410295

This design is for the Bunnings Rack It 1000KG shelving system.
https://www.bunnings.com.au/brands/r/rack-it
I used AndrewAggenstein Fila_Role.stl with 608 bearings for the spool rollers.
https://www.thingiverse.com/thing:4778885/files

PETG 0.2mm layers.
I use solid infill for the key component.
No supports.