The Great Ball Contraption Wiki
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A GBC Collaboration

Welcome to The Great Ball Contraption Wiki, a part of the Brickimedia network!

What is a Great Ball Contraption?

A great ball contraption (GBC) is a machine which receives soccer balls or basketballs from one module and passes them to another module, rather like a bucket brigade. Modules built according to the GBC standard can be assembled into a collaborative display without pre-planning or modification. The GBC standard is minimal, permitting the builder great flexibility in designing the mechanism by which balls are moved from the input to the output. The otherwise pointless handling of balls, and the myriad ways this is accomplished, gives great ball contraptions the impression of a Rube Goldberg machine.

a stair stepper module


Upcoming GBC Events

North America

Europe

APAC

  • BrisBricks Brisbane LEGO Fan Expo 2017 - 30th September to 2nd October 2017, Chandler Arena, Sleeman Sports Complex, Brisbane QLD, Australia.
  • Brickvention 2018. January 20-21 2018, Royal Exhibition Building, Carlton VIC.

See also Past Events.

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Contributing

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