MGBC (Micro GBC) Assembled




Two very small Great Ball Contraption (GBC) modules. The Ball Pump is the very first iteration of the Sherry Caywood design for the GBC Workshop at Bricks By the Bay 2017 in Santa Clara, California. Sherry modified that design to make the workshop module compliant with the GBC specification by having a 10x10x10 "inbox."

I left the original design as it was and created a simple Stepper module. Neither is compliant with the GBC specification; the balls are confined to travel along axles. What I wanted was a very compact assembly, and it works well. It ran for approximately twenty hours at Maker Faire Bay Area 2017 in San Mateo, California without any problems.

I found that the general public doesn't know or care if the assembly is GBC compliant. What the public likes to see are modules where every possible ball location in fact has a ball in that location. It somehow satisfies some instinct about being complete. This assembly can operate for hours with every step in the Stepper module filled with a ball.

There are separate building instructions for the Ball Pump and the Stepper, and for a set of universal joints that connect the two.
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Name MGBC (Micro GBC) Assembled
Designer Walt.White
Designed 2017
Parts 433
Theme Technic
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