Over-the-Top Marble Machine
thingiverse
This little marble machine uses 6mm Airsoft BB's for the balls. When they get to the bottom, just tap the little thwacker and send them back over the top to the start. It's actually a little more challenging than it looks! See how many balls you can keep going at the same time. Plus, it prints in one piece (except for the feet) and with no supports! Watch it go: https://youtu.be/Q6aKoDP1uTw
Download Model from thingiverse
With this file you will be able to print Over-the-Top Marble Machine with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Over-the-Top Marble Machine.