Introducing the Wheel Lift Marble Machine, a fun little self-contained piece of kinetic art. Designed for .2 inches steel bearings.
Unfortunately, this model only prints on pretty large printers but I have more machines in development that I hope to be sharing soon!
If you'd like to see more of my work feel free to check out my design Instagram @coolthingsbyjacob.
The Cheapest I Could Find PLA
[Make sure print units are set in inches. If the print imports into slicer super small then scale up by 2540% (mm to inches conversion)]
When I printed I did not need any brim or raft for the Lift Ring, but I needed a Raft for the base to ensure the 5 print in place components properly adhered. Make sure to orient as pictured above.
The Lift Ring can be printed with a low infill but you may want to do the base at a higher infill as the knob will have some torque applied to it and you don't want it to snap super easily.
When you remove the Base from the raft be very careful to cut any loose strands from the back before you twist the knob or you will snap it :(
The machine works pretty well but not 100% so you may want to add a little cardstock on the back of the base to keep the marbles from falling off.
Enjoy and have fun!