BZB

Update: Since writing this I have replaced the flex-coupler with a u-joint and the combination of the BZB and the u-joint has is providing an even better result


This upgrade is intended for a stock Tevo Tarantula with a z- rod that is found to wobble and where the user notices z-banding.

First checks.

The Kit Tarantula implements a stepper motor at the top with a z-rod hanging from a flexible coupler. Before you go through the effort of printing and installing this upgrade, do the following verifications
1. Ensure that the acrylic bracket on which the z-stepper motor mounts is exactly square to the frame. (as seen from the side) Use a small square to measure this. If it is not square ensure that the horizontal extrusion is flush against the vertical extrusions on both sides. If it is flush but still not square, use a shim on one side of mounting screws along the length of the bracket to shim it until it is square. Fasten the t-nuts. Verify again.
2. Measure the dis