- "Bottom V1.0" is printed with Support (Everywhere with Lines) Inner diameter of 0.24 mm are drawn larger Support must be broken, top edge has to be slightly filed - "Filament guide V1.0" I have printed with 215 ° and layer height 0.1mm Inner diameter of 0.24 mm are drawn larger Ball bearings must be pressed fit The ring at the bottom (see picture) must be broken, and flat surface can be easily straightened