Quarter trap
thingiverse
Quarter trap. The stl file has a second object placed a ways from the trap. Simply lay the quarter in the trap/box when it's around 65% finished, and it's busy printing the second object. Don't use supports or the quarter won't fit.
Download Model from thingiverse
With this file you will be able to print Quarter trap 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 Quarter trap.