Looking for a fun and satisfying 3D print? The Simple Marble Run is a fully printable kinetic toy that’s designed to be printed in one piece, no supports, no assembly, and no extra parts required!

This model features a compact and clever design that lets you enjoy a smooth, gravity-powered marble run straight off the print bed. As a bonus, STL files for both a 10mm and a 6mm ball are included, so you can get started right away.

For the smoothest performance, especially with the 6mm version, I recommend using a real ball such as a steel ball bearing, glass marble, or plastic 6mm BB. These offer optimal weight and rollability, enhancing the ball’s movement and overall fun.

Worried about print time? This design can be printed at a 0.24mm layer height to significantly reduce printing time without sacrificing function.

If you enjoy this Simple Marble Machine, be sure to follow. If you all like this then i will make many more Simple Marble Runs with even crazier marble paths!