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

  • [1] Brickvention, Melbourne, Australia. January 13-15 2017. We may be able to beat Brisbane's record!

See also Past Events.

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Contributing

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The Great Ball Contraption Wiki is your web site! Add the GBC content you want to see. We are kindly hosted by Brickimedia, so your Brickimedia account is all you need. How you can make this site better:
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Latest reply

lego tank treads

Posted by 2a02:1811:d0d:c300:b92e:c9a3:c77a:bd5 on 12 January 2017 at 17:53.
Forum: Great Ball Contraption > Great Ball Contraption Discussion

1 12 On 12 January 2017 at 18:15
by 2a02:1811:d0d:c300:b92e:c9a3:c77a:bd5

Beginner help

Posted by 173.50.86.9 on 30 April 2016 at 20:59.
Forum: Community > Wiki help

3 379 On 11 January 2017 at 20:06
by 70.16.195.198

Table-spanning module

Posted by Captainowie on 26 September 2015 at 13:41.
Forum: Great Ball Contraption > Customs

62 3067 On 9 January 2017 at 05:29
by Captainowie