Jorian Doornenbal from the Netherlands build one of our latest GBCs, GBC 58 Dump ‘n’ Drop. This machine features a very cool mechanism to load and drop the GBC Balls just in time. It is created from the very affordable LEGO 42167 Mack LR Electric Garbage Truck set so it is easy to get your hands on. And the very best part? The building instructions are completely free!