Tevo Tornado (Creality CR-10) - Z-Axis motor damper(s)

thingiverse

In my ongoing battle against printer noise, I found myself frustrated by the Z axis's lifting sound during retracts. This was particularly grating since I always print with retracts and a lifted Z axis at retracts. I have an extra Z axis motor, which unfortunately means twice as much noise. Both motors are rigidly attached to the frame, acting as a resonator and amplifying the vibrations of the motors. At this point, I thought it would be worth trying dampers on these motors just like I had installed on the X and Y axes. I bought additional dampers, designed mounts for them in Fusion 360, and got to work. You don't need to mount the motor(s) in the upper part of the printer as is typical with stock designs. A lower mounting position is all that's required. This setup also smooths out any misalignment between the motor shaft and spindle. I'm thrilled with the results! The noise has dropped by at least twice, and my printer now runs quieter than it did on TMC2208 drivers. I've had this printer since one of its early shipments, with soldered drivers directly on the board. In addition to the reduced noise, print quality has significantly improved since parasitic vibrations from these motors are no longer transmitted to the frame. If you have two motors, simply create a mirror copy of the mount. You'll need: - 2 M4x8 screws - 2 M3x16 screws - 2 M3x6 screws - 2 T-nuts M4 Additionally, you may need to cut a triangle in the rear main plate's Z-axis mounting (check out the pictures). https://www.youtube.com/watch?v=LunQd1T2LSo