Plug for Square Tube | Sized for Skywalker Trampoline

This is a replacement insert for the bottom of the net poles a Skywalker trampoline. It's slightly taller than the originals (at least on my trampoline), and each wall is slightly bowed out for a better pressure fit. The triangles at the bottom of the walls are to relieve tension on the layer seam when the walls flex.

I recommend something flexible like TPU or PETG, but my orange PLA Tough test print fit so well I just left it.

The Blender file is included in case you want to modify it for a different sized tube.