Tevo Tarantula Z Belt

This is how I got rid of Z banding on my print with Tevo Tarantula.

The Leadscrew has been replaced by a belt on Z axis. Fairly simple !

You'll need some GT2 belt , 2 * 10mm pulley M5/16 teeth, one screw M5x30.

To avoid Z axis falling down when Z motor is off and damage your bed, you need to tune some parameters in Marlin and in your favorite slicer file:

MARLIN:
Edit configuration_adv.h file, and replace:
define DEFAULT_STEPPER_DEACTIVE_TIME 60
by
define DEFAULT_STEPPER_DEACTIVE_TIME 90000

Edit configuration.h file and change steps/mm and feedrate for Z motor
define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,100,97.0874} // 100
define DEFAULT_MAX_FEEDRATE {225, 225, 5, 25} // 5

in Repetier/Cura:
Disable in printers parameters "deactivate motors after end/urgency stop"

For experts, Ending G-code to park the Z axis can be configured. It will avoid heater to damage the bed in case of power off after print completion.
Example:
G90 ; Absolute position
G1 X0 Y280
G1 Z 0.5 ; laydown the haed on the bed