Creality CR-10 Upgrade - POSI-DRIVE Bed Leveling

Description

Upgrade your hobby CR-10 printer to a professional production machine!
A Creality CR-10s printer uses a stepper motor on each Z axis screw. Both motors use microstepping to achieve small layer height. Problem is, microstepping was developed for smooth movement, not for accuracy. The two motors can not possibly remain in sync with each other. By the top of your print job, the extruder is no longer level with the bed. Over multiple prints this accumulates to where the first layer no longer sticks to the bed on the high side.
The Posi-Drive Leveling Upgrade Kit syncs the two screws with a timing belt, guaranteeing that the extruder and bed remain level for the life of the printer. Installing the kit is a half-hour job:
relevel once again so the extruder is level with the bed
remove both Creality top brackets from the Z screws
install a pulley on each screw
loop the belt over both screws
re-install the Creality top brackets on the Z screws
install the idler assembly and adjust the belt tension
tighten the pulley set screws
unplug one of the printer's Z stepper motors.
(one motor can easily operate both screws)
It's that simple!
Upgrade Kit includes pre-assembled idler bracket, Z Axis pulleys, the correct size belt for your width of printer, and installation  instruction sheet. Installation is a half hour job.