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Posted

Great Ball Contraptions are fascinating and I designed two GBC modules that use LEGO slides for getting the balls up and down. The first uses a ball pump to push the balls up through the tower. The balls then roll down a double helix:

The second modules uses the double helix for an Archimedes Screw. This is a very effective method of lifting balls up.

Posted
It would be great if the slides came in a transclear version.

Yes! Is it necessary to close the top of tube?

Posted

Wonderful way to put those slide elements to good use :wub: It is unfortunate that you can't actually see the balls climbing the screw, but that doesn't take away from it being a very clever and effective design :classic:

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