Contra-Rotating Turbine Fidget Spinner

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This contra-rotating spinner will create interesting geometric patterns and is just plain fun to play with. It is a fast print, with no support required, and a great conversation starter.  Print Settings: V2. STL and V2-Mirror.STl: Infill 30%, layer height 0.2mm, 2 shells Center Support: Infill 50%. layer height 0.2mm, 3 shells (in case it needs to be drilled out) Bill of Materials 1x V2.STL 1x V2-mirror.STL 1x Center Support 1x 608 Bearing (I used this one) 1x 8-32 set screw, 1" long 2x 8-32 threaded brass ball (I used these) I pressed in the bearing using a C-clamp with moderate effort, though you may need to sand or add a dab of glue if your printer isn't that accurate dimensionally.