The GBC 21 Mine Factory is open!

ATTENTION to all lucky LEGO 42055 Bucket Wheel Excavator owners: our GBC 21 42055 Mine Factory is finally out! This Great Ball Contraption is entirely made out of parts from the Official LEGO 42055 BWE set. Get the BUILDING INSTRUCTIONS today! https://pv-productions.com/product/lego-gbc-21-42055-building-instructions/

With over 3300 parts, 500+ pages of building instructions and a footprint of 100 cm (40 inch) by 60 cm (24 inch) this GBC is by far the biggest, most epic and ambitious GBC 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 perfect harmony to make a full loop so the ball flow will never end. What holds you from building GBCs?? ;)

Review time! :)

This is great! Planning on taking our GBCs on a big layout during an event? Steve Jackson from Texas wrote a nice review on @TheGreatBallPit blog about our GBC 13 – 42042 C Model. Thanks for sharing! Watch the video and give it a good read: https://www.greatballpit.com/2018/05/pv-13-module-review.html


Have you also build one of our models yourself?

Gearing it up!

Always great to see our creations come to life in your building room. Lance Shuler even upgraded our GBC 16 – 42042 C Model and engineered a extra gearbox to it.
Did you already build this unique Inverse Belt Lift Module?
Learn more and get yourself started today: https://pv-productions.com/product/lego-gbc-16-inverse-belt-lift-module-42042-building-instructions/


Have you also build one of our models yourself?