If you are TIREd to find weak shell designs this is the best option: simple, easy to print and robust (3mm shells).
3 options files: N(issan) / H(onda) / Flat (no letter)
Add one more file with OD7mm for small valves (of some cars).
Ps: Better use ABS instead PLA or PETG.
CarTireValve_EASY.stl | 9.3KB | |
CarTireValve_EASY_1.skp | 176.3KB | |
CarTireValve_EASY_H.stl | 10.8KB | |
CarTireValve_EASY_H_OD7mm.stl | 11.2KB | |
CarTireValve_EASY_N.stl | 11.2KB |