This part snaps into the groove of a 2020 aluminum extrusion to create a cover for cables and wires. The model is not very long but the STL can be scaled if you need it to be longer. I also included the .ipt model if you want to customize it.
I printed it standing upright with a brim. This strengthened the fingers that snap into the groove and let me snap the part to whatever length I needed without tools.