I remixed the original design to be able to combine it with the already in use z rod holders from aliexpress:https://www.aliexpress.com/item/33013348068.html
The design does not limit the movement of the z axis!
Use i.e. Cura to mirror both parts for the left side
Cut the 1m M10 rod into two 48,8cm pieces (verify on your printer before cutting!)
Parts needed:
M5 tap and die (for the 2 edges of the top v slot profile)
6x M5x30
2x M5x25
4x M5x10
10x M5 t nut
12x M5 washer
2x M10 acorn nut
6x M10 nut
8x M10 washer
1m M10 rod