TP Tube 3D Printed Marble Run

thingiverse

This design is for connector pieces that can be printed quickly to use with toilet paper tubes and create a marble run. Every other marble run I found on thingiverse was either designed for smaller ball bearings or took hours and hours to print! This is a simple marble run using toilet paper tubes cut into fourths as the tracks, which can easily be remixed for different combinations and configurations! This design uses standard 16mm marbles. To make one track, you will need to print 1 Top piece, 1 Bottom piece, 8 Adaptor pieces, 3 Up pieces, 3 Down pieces, and 1 cap. You'll also require 2 TP Tubes. For detailed instructions on how to assemble the marble run, see my instructable at https://www.instructables.com/id/TP-Tube-Marble-Run/.