Better Z motor mount - adjustable and reinforced

This Z stepper mount is designed for Ender 3 pro but will work on some others as well. It uses the factory screws and screw holes.

It is designed as reinforced, more sturdy mount with slotted holes for mounting the motor so you can align it properly to mostly eliminate binding in your Z axis lead screw if you have some. It is also necessary to align your motor if you want to install dual Z mod with upper bearing.

My recommended steps to align your Z motor:

For easier workflow download my alignment helping tool: Z stepper alignment jig od autora radkoko | Stáhněte si zdarma STL model | Printables.com

1. Install new motor mount leaving all the screws on the mount little bit loose.
2. Put the lead screw nut in the middle position and tighten it.
3. Move your Z axis up as much as possible.
4. Optional - install alignment tool on the upper beam so the lead screw is in the middle of the slot. Install it with some screws and T nut or use some clamp or just anything.
5. Measure and make note of the lead screw end position - distance from the upper beam and from its end. If you did step 4 then note the pointer position.
6. Tighten the screws holding motor mount on the frame.
7. Move your Z axis all the way down.
8. Move the Z motor in the mount so the position of the lead screw end is as close as possible to the position you noted in step 5.
9. Tighten the motor in the mount.
10. Repeat from step 3 until the position of the lead screw end is the same in both end positions of the Z axis.
11. If your alignment is still off and the slotted holes are not slotted enough you can also move the lead screw nut a bit if your printer will allow.

Note: The lead screws are not perfectly straight and also have some wobble in the nut so when noting the positions try to spin it a little and mark the average position.

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