Similar to the Prusa spool rotary paint station base design, there are 3 parts in total and uses a smaller bearing (I had left overs from a different project)
The file should not be loaded as a single object as all 3 bodies are in the same file, so click “No” when prompted
Body 1 is a tight fit and may require the use of clamps to help position it securely into Body 3
I printed with brim to ensure the parts remained flat and stuck to the build plate
Unit is designed for a 3mm id x 10mm od bearing (XiKe Bearings), link below
https://www.amazon.com/gp/product/B072F6JBT4/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
Including the Fusion 360 Files as well in case you want to modify, don't forget to check Dracos model to see if this already fits your needs as well
https://www.printables.com/model/37444-prusa-spool-rotary-paint-station-base
I don't have a top on mine as most of the items I paint are larger, but you could also use the cardboard from the filament box and secure to the top to have a uniform flat surface.
The author remixed this model.