This is a Shelving system that will fit the alternative tray designed by Bas van der Ploeg to keep filament samples created by @Zahg and @Seemonster
The filament samples were a perfect fit for my needs and the alternative tray was in the same lead, however, I needed to keep the trays together not warring about miss placing them or keep looking for them when needed so I came up with this simple shelve idea following these criteria
Note: I printed the model at the same orientation provided without support
If you’re using the alternative tray version to keep the filament samples then this is a nice addition to keep things neat.
If you like check the Interlocking Base that can be used to join multiple towers together.