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I have an Ender 3 V2 Neo. I have installed the Creality dual Z-axis upgrade kit (with a second Z stepper motor) and third-party anti-backlash nuts. Only afterwards did I discover that users were reporting Z-axis sync problems developing between power cycles (which I have confirmed firsthand).

One solution I came across is to install a kit which uses just the original Z stepper motor with an additional Z screw and a sync belt connecting both Z screws.

Another solution I came across was using the G34 command to auto-align Z steppers. Then I discovered that to use G34, I would need to upgrade to a third-party motherboard with dual Z stepper drivers.

Both options are about the same cost.

If you have experience with either or both options, I would appreciate your feedback on the pros and cons of each option.

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  • $\begingroup$ On my old Wallace, I twisted an unpowered Z axis as part of bed leveling. $\endgroup$
    – Dave X
    Commented Sep 18, 2022 at 11:38

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I'm sharing my experience, I installed the dual Z motor kit and after a bunch of fiddling I'm getting expert quality results.

I just want to share my solution if somebody wants to consider doing this upgrade.

My 2 Z axis motors did not spin the same speed. I found the following problems:

  1. The posts for the gantry were not parallel, undo the bolts on top (and bottom if required) and straighten it up.
  2. The brackets holding the Z gantry was not square to the bar and both sides had loose screws.
  3. The tension screws on both ends of the gantry was incorrectly set
  4. last and by no means least, the 2 brackets that hold the motors in place tilts the motors backwards when no leadscrew is in, so when you have it connected it places torque on the motors.

Following these steps, I was able to get my motors to spin at the same speed which resulted in amazing print quality.

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    $\begingroup$ Hi and welcome. Nice first answer! $\endgroup$
    – Greenonline ♦
    Commented May 14 at 11:28
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I have not used ether of the mentioned solutions. However I currently use this BeltDrivenEnder3

and it the best upgrade I've done for my Ender3 v1 pro. Easy enough to print and assemble and My Ender now has the print quality of a true pro printer.

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    $\begingroup$ Interesting alternative. Never worked with PETG though; I'll have to investigate what's involved with that. What's the pros and cons of the single vs dual Z variants (i.e., would I need a new motherboard for the dual Z, etc.)? $\endgroup$
    – claytoncarney
    Commented Sep 18, 2022 at 18:46
  • $\begingroup$ I've only have used the "Stock V-Wheels" Variants. Duel z steppers do need a board that has duel stepper support, or you could try a Z splitter cable and up the amps a bit to drive a second stepper in parallel $\endgroup$
    – Akriss
    Commented Sep 19, 2022 at 2:27

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