A bumper for the Onewheel+. This will also work with a V1 Onewheel which would make it possible to use OW+ footpads on a V1. There is also a version for TPU which is has been thickened in some areas to keep them from being too flexible.
Use #10-32 heat inserts in the holes on the inside where the screws from the top of the rail go in- https://www.mcmaster.com/#93365a154/=18m8lbu
If you are using S3D, it may not generate support everywhere it needs. Use the support tool and make sure there is support in the middle where the LED window is. Also be sure to remove support from the holes where the threaded inserts goe, it can be a little difficult to pick the plastic out of there.