About this 3D model
This is for standard plastic bottle caps. hang your bottles and recycle ! printed with M3D Micro you have to glue the original plastic cuo inside the 3dprinted shell. is usually a tight fit, with small bottles you probably dont need to use glue at all. print with the base as in the picture. I printed with prusa and with M3D Micro without support, check your printer bridging capabilities.