https://youtu.be/AA78sXPfYaI "A 3D Printed Kinetic Marble Machine" is a relatively easy to 3D print and assemble kinetic model featuring a two piece "print in place" dual axis gimbal mechanism. The model is constructed of ten unique 3D printed components (eleven total) and is very quiet. We find it pleasing to watch the marble traverses the circular track and are awaiting grandkids approval! Designed using Autodesk Fusion 360, sliced using Ultimaker Cura 4.12.1, and 3D printed in PLA on Ultima