The main tower of Ball Rolling Machine 20, the LEGO Great Ball Contraption by Japanese designer Rimo Yaona, will drive you nuts.

This huge ball machine features an incredible mechanism: 24 panels slide from left to right in perfect harmony to push your favourite basketballs and footballs to the top of the GBC module.

The movements of the sliding blocks in a beautiful lime colour form a vertical wave that will catch your sight and fascinate your friends and children.

This LEGO ball machine is also equipped with a stepper and a very clever and innovative ball feeding mechanism.

I let you discover this wonderful construction on Planet GBC or on the Rimo Yaona channel.

You can now integrate this huge creative construction in your GBC circuit thanks to ready-to-build LEGO kits available on BuildaMOC.

Amazing!

100% ORIGINAL

We only use original LEGO® bricks.

Give back to the designers

The designer of this MOC will receive 10% of the total sale price.

Packed on request

Our MOCs are not ready packed, they are picked & packed after purchase.
Please allow 5-20 working days for us to send your MOC.

Instructions included

All of our MOCs include the original digital instructions from the designers.