Windmill Lift is a cool little GBC module from Sam Friesen. This LEGO Great Ball Contraption is composed of an input bin with a mechanism that is pumping GBC balls by the bottom and carrying them to a little 3-blades propeller. The mechanism is quite smart and reliable even when a lot of balls are present within the entry bin, which is quite remarkable in design for such a compact LEGO GBC. You can reproduce this awesome pocket LEGO ball machine, perfect for beginners or to build with your kids, thanks to free building instructions provided by Sam Friesen.
Original design by: Sam Friesen
Number of parts: 370
Complexity for building: 
Price for Building: €€, affordable
Windmill Lift, on Sam Friesen YouTube channel
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