:blush: i m newbie of here & SketchUp either, i wanna do a ball joints (like that use on Revotech toys)connect around a spin. after lots of study, i hollow 6 hole on the spin, however, due to the thin wall issue, it could not be printed. i dunno how to fix it in my limited knowledge of 3D. so i post & hope u seniors could advice or fix it for me. i just miss this one to complete my set, so poor. i ll appreciate if any one help. thx a lot.