One of the buckyballs from pmoews wit two rings ...print in orange! worldcup 2014 edition download file bucky60.stl from thing:12675 Import printfile as mesh into Freecad convert mesh to solid add 2 torusses of right size on the right place export to stl - format... print once saving stl with the right placement in center of a printbed abs, 250 c, raft, support external, skeingforce - craft- raft settings: Base Feed rate multiplier: 0,75 Flow rate multiplier: 0,6 Infill Density: 0,3 Layer Thicknest etc,,,: 2,2 Layers: 1 Nozzle Lift : 0,3 Infill overhang: 0,1 Interface Feed rate multiplier: 1,5 Flow rate multiplier: 0,7 Infill Density: 0,25 Layer Thicknest etc,,,: 1,2 Layers: 2 Nozzle Lift : 0,3 etc.