Had 2 8mm rods left from my old ender 5 and wanted to use them for a spoolholder.
Had many TUSH laying around and reused as much as possible. out came this simple support for the 8mm rod. Just push the rod with force in and be happy :)
Maybe add a spacer between the rail rollers. 9mm should be fine…
The author remixed this model.
redrawed the support from tush in f3d and made the wholes larger to fit 8mm rods from my old ender 5