NASA Saturn V Stage 1 to 2 additional coupling ring

thingiverse

If you're planning to print the Saturn V from NASA's website (available at https://nasa3d.arc.nasa.gov/detail/SATURNV), I've discovered an issue with the model for Stage 2 at its base. The coupling ring model fails to mate properly with the bottom of Stage 2, resulting in a 5mm gap when assembling the parts. To fix this problem, you can print an extra ring that glues onto the base of Stage 2. However, be aware that the ring fits perfectly onto the coupling ring but the Stage 2 model itself is slightly smaller in diameter, requiring some careful filing to complete. It's worth noting that the ring measures about 85mm in diameter and is very thin, so take extra caution when cleaning up the raft to avoid any damage. Additionally, there are 216 ridges around the ring.