I can’t count the times that LEGO builders or even the general public see an awesome GBC (Great Ball Contraption) layout at an event and want to make one themselves… but just don’t know how to get started. So today we are going back to the basics, breaking down GBC modules into their core mechanisms to show how to make balls move. We’ll explore some of my favorite and most frequently used mechanisms found in almost any GBC module. These core mechanisms enable a wide range of functionalities for transporting balls upwards, and each can be customized to fit whatever your brain can imagine. Even the most complex modules can be broken down into basic movements and mechanisms. There are certainly more ways of moving balls, but these five are the most common in my experience. Slider-Crank Mechanism Slider crank mechanism by bricksngears While there are several variants of this mechanism,...

