This video shows the full (I tried!) process of y-axis of my 1st CNC milling machine build. Process animation is included.

Key spec.
- y-Axis stroke : 220mm
- Linear motion guide Block / Rail : HGH / HGR20
- Ball screw : SFU2005 (OD 20mm)
- Drive motor : Stepper motor NEMA34, 8.5Nm, 5A

Hope this video be helpful for you and you enjoy it!
Thank you~