Report as inappropriate

If you sanded the inner joint he will fall down.. Only a tiny bit of that friction glue is required. The kneecaps were just on different build plates that fit together to make it symmetrical. (updated).. I never noticed that part because I just printed both build plates at once. One side of the kneecap is thicker so if you stuck 2 thick sides together that would explain you having to sand it to death.