Servo and threaded rod gears
thingiverse
I sponsored a Makesmith CNC router project on Kickstarter. This 3D printed assembly was designed to make it easy to attach gears without having to perfectly align them. They fit onto an FS90R servo and a threaded rod. The design is versatile and can be used with other projects. Attach the assembly to the servos by super gluing a nut onto the threaded gear, and then threading a screw into the servos on top of this attachment. With the thread rod lined up on the bottom with your motor you should easily feel it click and fit perfectly together.
With this file you will be able to print Servo and threaded rod 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 Servo and threaded rod gears.