While designing my 3D printer enclosure, I needed a way to safely place either my Dryboxes or a single spool of filament on it. Placing them on the top panel was not an option so I decided to install two 16mm aluminum bars above the panel mounted on the 2020 profile.
The holes are designed for M3 screws.
No supports are needed if printed on the side.
Material PLA, infill according to strength needs.
The author marked this model as their own original creation.