A patreon request: make a guide on how to add a second Z axis to an Ender 3. In this video we achieve that, showcasing three methods to get the gantry level. This includes a mechanical belt driven kit from TH3D, adding a 2nd stepper motor in parallel, and a 2nd firmware controlled stepper with G34 auto z levelling.
If you were looking to do this upgrade, hopefully one of these methods will be suitable for you!
Everything in this video was purchased with my own money. The links all point to TH3D for convenience only. 3D printed versions of the concept are linked below.
0:00 Introduction
0:42 Identifying the problem
1:56 Overview of the the three methods
3D printed Kazoo test print: https://www.prusaprinters.org/prints/65397-kazoo
Eryone Steampunk Rainbow PLA from X3D: https://x3d.com.au/collections/eryone/products/steampunk-rainbow-pla-1-75mm
3:06 Ender 3 PSU relocation
Thingiverse option 1 (used in this video): https://www.thingiverse.com/thing:4601467
Thingiverse option 2: https://www.thingiverse.com/thing:3426861
Thingiverse option 3: https://www.thingiverse.com/thing:3304804
Thingiverse option 4: https://www.thingiverse.com/thing:4515958
4:36 Option 1: Mechanical - belt driven leadscrew
Printed option by Scuddy: https://www.thingiverse.com/thing:3451260
Printed option by Proper Printing: https://www.thingiverse.com/thing:3746653
TH3D Ender 3 dual Z kit: https://www.th3dstudio.com/product/ender-3-dual-z-upgrade-kit/?share=lawgicau
TH3D installation guide: https://support.th3dstudio.com/hc/product-information/all-other-products/ender-3-ender-3-v2-cr-20-dual-z-kit-installation-guide/
7:48 Alignment
TH3D printed alignment tool: https://github.com/th3dstudio/UnifiedFirmware/blob/2.0.x/STL%20Files/Gantry%20Leveling%20Block%20STL/GantryBlock%20-%20print%202.stl
9:39 Option 2: 2nd stepper motor in parallel
Spare stepper motor from TH3D: https://www.th3dstudio.com/product/standard-extruder-stepper-motor-long-shaft/?share=lawgicau
Stepper motor coupler: https://www.th3dstudio.com/product/upgraded-leadscrew-coupler-for-cr-10-cr-10s-tornado-ender-2-and-more/?share=lawgicau
Parallel stepper motor adaptor plug from TH3D: https://www.th3dstudio.com/product/dual-z-stepper-motor-adapter-w-cable/?share=lawgicau
My video on crimping your own connectors: https://youtu.be/GZOh1NzqzzU
Printed stepper motor holder: https://www.thingiverse.com/thing:3189649
12:39 Flexible coupler to remove Z banding
13:09 Option 3: 2nd stepper motor with G34 auto alignment
Purchase the BTT SKR E3 Turbo:
Amazon: https://amzn.to/3g2YaM1
Aliexpress: https://s.click.aliexpress.com/e/_A9jjm2
My rear mounted universal electronics case: https://www.thingiverse.com/thing:3688967
14:37 G34 minimum firmware changes
My video on setting up software to edit and compile Marlin firmware: https://youtu.be/eq_ygvHF29I
14:56 G34 default behaviour
Marlin G34 reference: https://marlinfw.org/docs/gcode/G034.html
16:11 G34 slicer start gcode change
16:28 G34 advanced firmware changes
Marlin M422 reference: https://marlinfw.org/docs/gcode/M422.html
17:59 Conclusion - You on Kazoo!
Buy quality and affordable filament from X3D. Buy 3, get 1 free and a free sample pack with every order: www.x3d.com.au
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