Pixar lamp GBC module
Made from set 21357
GBC Module Catalog
The most comprehensive listing of Great Ball Contraption modules
Recently Updated Modules
Transstepper Reservoir
Transparent stepper based on pinwheels stepper
Colour catapult
Sorting and shooting.
Slow Counter
A slow and highly precise counter ;)
Diagonal in Lime and Black
This module was created because I had a 16x16 plate left over. I have set myself the goal of building a module on...
Great Pinball Contraption
An interactive pinball machine with a built in ball gate that automatically diverts incoming balls to a bypass while a...
Train Track Tower
I assembled this GBC module from various modules and then implemented my own creativity. The basis of the conveyor is...
The Hammer (and The Catcher)
Stuart's Catapult impressed me from the start. But the balls just didn't fly far enough for me. So I built a 2nd...
Moving Platform
This is one of my first GBC MOCs. Build in winter 2021/22. The goal was to create a more or less random output with...
Thresher V2
A spinning thresher assembly pushes balls up a 11x11 rack gear ramp This was my 2nd attempt at building a mechanism of...
Studless Hoecken Linkage
This is a Studless Technic build of the mechanism from Lawrie George's Brickworld 2024 Workshop Module. The only...
Where we're going we don't need roads (aka BTTF Launcher)
This is a ball acceleration module that launches balls up a ramp under the flying Delorean (Lego Speed Champions 77256)...
About the Great Ball Catalog
Great Ball Contraptions (GBC) modules are custom-built LEGO machines that transport small LEGO balls through creative mechanisms.
This catalog is the world’s most comprehensive resource for GBC modules, featuring hundreds of modules from dozens of builders, a lot of them with build instructions. Whether you’re a seasoned builder or just discovering the hobby, you’ll find hundreds of unique designs to explore and build.
Start browsing to discover the amazing variety and ingenuity of the global GBC community.