I have designed and 3D printed a gear system with three gears. Two identical gears at each end with a smaller gear in the center. One of the larger end gears is to be rotated by a stepper motor, the middle gear transfers the motion to the other gear that carries a device.
The issue is that there is a wiggle in the end gears even when one is fixed/held in place. If I hold down the gear controlled by the stepper motor, I can still create a small bit of rotation in the other end gear (carrying the device). In the video, I show this 'wiggle' by holding down one gear and still being able to move the other.
What can I edit/change or add to the design to prevent this movement from happening e.g. design ideas or additional components I could add? I need the gears to be precise so that they move exactly with each other and no wiggling in one of them without the other taking place.