Adjustable printed Single/Dual Z motor mount

My newest revision (re-made from scratch) of a single/dual Z motor mount.
Learning from my previous iterations. so this is  technically v3

• 6x M3x8
• 2x M3 t-nuts 
• Print in PETG or better - NO PLA
• high infill 30% or more

There's now an optional 2mm plate that goes below the motor, so the motor can sit right on it.

If you don't want to disconnect the Z coupler from the motor, use the model with front opening.

I don't know if there is a trick, besides hoping the t-nuts rotates in place to be able to lock, but seems to happen 50% of the time. So this has a little printed block in the back that stops the t-nut from rotating but still allows for sideways adjustment of the mount.

Because the t-nut can't rotate, these have to installed by sliding  from the top of the printer, it's a bit annoying, but I prefer that over a t-nut that doesn't want to rotate in place correctly

The four screws attached to the motor allows for front/back adjustments.

With this you should be able to reduce z screw wobble to a minimum, of course if your Z screw has a curve or the Z coupler is not perfectly aligned and motor is not perfectly level in relation to Z, you will still get some wobble.

------

If interested in Dual Z here is what I personally bought and installed on my printer:

PTFE coated Z screw, works without grease, must be used with a POM nut, Brass nut will probably scrape the coating.

• Z coupler - 5x8mm - These are new to me but are much better than my old aluminum ones that looked like a thick spring -  Amazon
  
• Z screw - the smallest the lead the more z precision you get, stock ender has 8mm lead.
  A smaller lead (2m or 4mm) will have more Z precision, but will be slower, the gantry won't move by hand / won't fall on its own, will need firmware updated, since it takes more motor spins for a similar Z move.
  Lead is the amount the Z will move in one motor rotation.
  Ender3/pro/v2 length should be 367mm - (I have 400mm so they stick out the top a bit)

 Aliexpress - Amazon (untested band, but should be similar)

• (Optional) Anti-backlash POM nuts - the Z screw will come a normal POM nut - match the lead with the z screw (stock is lead 8mm) Aliexpress - Amazon (lead 8 only)
  
• Right hand side plate (this will work on ender3/pro/v3 CR10) - even has a second extruder mount, if you go Bowden dual color that's a practical approach. Aliexpress - Amazon