Pyramid (tetrahedron) screwless gears
thingiverse
The original design was Eccentric Sphere Gears (http://www.thingiverse.com/thing:6499). I made adjustments to the SCAD files, replacing screws with pins for securing gears to the central piece. Instead of a sphere, a tetrahedron is utilized. Unlike the original eccentric design, this one allows the gears to spin without significant shape changes. I have provided the SCAD files for both the gears (tetra.scad) and pins (pins.scad). In the gears file, eightflatgears() displays all components on the same print plane, while eightgears() shows the assembled item minus the center.
With this file you will be able to print Pyramid (tetrahedron) screwless gears 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 Pyramid (tetrahedron) screwless gears.