Get ready for Rolling Liftarm, the latest Great Ball Contraption from the GBC4ALL series.
This stunning GBC module features a long orange liftarm moving up and down along its slides onto a gear rack, grabbing balls and bringing them to new highs.
The complex gearing and the smart ball feeding mechanism from this amazing ball machine are not only cool to watch, but they are also perfect for you or your kids to learn about mechanical concepts.
Like any other module from the GBC4ALL series, this machine can be chained with others to form an awesome marble circuit, that you can easily motorize.
Thanks to a pivoting exit ramp, you can even decide how the GBC balls continue their race.
Made with only standard Technic parts, you can easily reproduce this beautiful pocket machine thanks to ready-to-build kits available on BuildaMOC.
Discover also the rest of the GBC4ALL series. We can bet you will love them !
It's easy:
We only use original LEGO® bricks.
The designer of this MOC will receive (at least) 10% of the total sale price.
Some of our MOCs are not ready packed, they are picked & packed after purchase. Please allow 5-25 working days for us to send your MOC, depending on whether the kit has to be assembled by hand.
All of our MOCs include the original digital instructions from the designers. They will be emailed to you when shipped.
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Every part needed for the build, bagged, plus the designer's instructions — printed or digital depending on the kit.
How long until it ships?
Most kits are picked to order: 5-25 working days to gather parts, print and pack (longer when the kit has to be assembled by hand), plus shipping time. Kits marked "Ready to ship" go out faster.
Do you use original LEGO® parts?
Only. From quality to ethics, no other brand gives the same result — we use 100% original elements.
Does the designer get paid?
Yes — at least 10% of the sale price goes to the designer of the MOC, on every kit sold.
Do you ship internationally?
Yes, worldwide. Parts are separated in bags and boxed so nothing shifts or gets wet in transit.
For companies
Want a custom brick kit based on your product, building or brand?
We build custom branded kits for events, gifts and launches — same sourcing and packing operation behind this catalogue.