Upgrading 3018 CNC z-axis

I purchased an upgraded z-axis for my generic 3018 CNC but I couldn't find details of how well they worked or how to fit them. This 30 minute video walks through most of the process in near real-time!
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The pros:
- very well made with a lot less flex and seems to be quieter
- a lot more travel for the spindle
-. The model I got can take pretty much any spindle in the future with just a new bracket
-. The knob on the stepper is really handy
-. Inexpensive and arrived in around 2 weeks from China. (The main piece with mounting hardware was $88.58 and the bracket was $12.47)
The cons:
- the distance from the bottom of the z-axis frame and the bed is less than on the plastic stock piece. If I'd known, I would not have done the upgrade because of what I mill but I'll make it work.
** I fixed this by raising the gantry - here’s how I did that for $30!! I’m now very happy with the upgrade… • Raising the 3018 X-Axi...
The lessons:
-. How to attach the kick-back (6:36)
-. How to wire the new stepper motor (24:00)
-. The clearance between the axis and the bed (28.36)
US $79.38 23％ Off | CNC 3018 Pro X-Axis Upgrade Kit Suit CNC Router 3018 Pro with CNC Milling Machine Accessories Sliding Table
star.aliexpres...
This was for my spindle size...
US $4.22 10％ Off | Aluminum alloy spindle motor base clamp / fixing bracket, inner diameter: 40mm 42mm 45mm-80mm Engraving machine accessories
star.aliexpres...