Lego GBC Screw Miniloop
I WAS NOT ABLE TO AD ALL THE PARTS TO THE PART LIST, SOME OF THE PARTS FOR THE SCREW ARE NOT ON THE LIST. This Lego great ball contraption miniloop uses a screw made of technic flex tube to lift the marbles up, then they role down the ramp and back to the start again. The ramp is made of "cheese slopes" and hinge bricks wich make it flexible.
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This MOC also has a 3D digital file available (eg LDD, MPD, etc): 3D Model