It has never been easier to build a complete Great Ball Contraption (GBC) loop yourself! With over 3600 parts and a footprint of 86 cm (34 inch) by 100 cm (40 inch) and a height of 46 cm (18 inch), this GBC is one of the bigger GBCs we have ever created so far. It is way bigger than the original LEGO model and it features multiple GBC modules which all work together in harmony to make a full loop so the ball flow will never end. This GBC is entirely built using only parts from the LEGO Liebherr R 9800 and can be referred to as Alternate Build of the 42100. When building this GBC makes sure you master the GBC building techniques and tricks so that you eventually also can build your own GBC...