Marble Machine Spiral Coil

thingiverse

I am learning Fusion 360 and built a simple marble run. The marble machine is designed for 9 mm marbles, but I recommend scaling it to fit any other size of marble. To prevent the machine from falling apart while in use, keep an eye on the tightness of the top cap - it's already quite snug. Be cautious when shrinking the design. Before printing, make sure to flip the handle and top cap STLs upside down. This will ensure that they print correctly. The corkscrew has a relatively small profile, so if you experience any adhesion issues, try using a brim on that part. If you use Cura, I suggest printing the actual track with the seam at the sharpest corner setting. The best part about this design is that it doesn't require supports! The steepest overhang is 60 degrees, and I was able to print it successfully with my 0.8 mm nozzle. It should be a much easier print with a smaller nozzle. Have fun building your marble run!