Download, slice and print this model in the MakerSpell app — available on Android and Windows. Get the app
Model Overview & Print Notes
This is a sleek, print-in-place marble run with a manually (hand) operated helical lift that can function with 10+ (3d printable) 12mm diameter marbles at a time! This marble run features 2 tracks on either side of the lift: an angled helix track with a back-and-forth curve at the end, and a funnel track that makes the marbles spin round and round. The tracks each feed into the opposing side of the helix lift, so even one marble can loop the entire marble run. Boost Me If you like my work, want to see more models like this one, or just want to support me, consider leaving a boost! Marble quick assembly: Push a rectangular pin into one semi-sphere of a marble Push the another marble semi-sphere onto the other side of the pin If tolerances are too tight or loose for the marbles, scale the x and y directions by increments of .05mm until you find a width that works for you. If stringing is an issue, a few options to try to fix the problem are: Set the nozzle to a lower temperature (or test with a temperature tower) Slow the print down Dry out your filament Version History: V1.1 (5/14/25) - Small tweaks to prevent more marbles from flying out of the run V1.0 (5/12/25) - Original model