Great Ball Contraptions (GBCs) are a staple of most LEGO conventions, the idea is simple create: a mechanical device to move balls from point A to point B, with a certain set standard. Then sit back and watch a) balls go flying b) kids be mesmerized for hours. It’s a challenging feet of engineering to create a mechanism that can withstand hours of continuous operation, typically the most prized honour for a GBC builder is the ‘Most Reliable’ award (or some variant). Unlike a lot of LEGO builds we see on The Brothers Bricks, aesthetics is not primary goal.
You can watch it in action here:
You can also check out the whole GBC video from our friends at Beyond the Brick.