Z axis for CNC mini mill

This is a model for making a Z axis for a CNC mini mill.
I had a milling table, Dremel, CNC shield and some motors lying around and saw a mini CNC mill in it.
I only needed a Z axis so I made one out of square steel tube (20x20mm). I connected them with 3D printed parts of ABS. It’s purple because I had a lot of that color. The spindles and guiding rod are M8.
Using model “Nema 17 bracket for milling table” I connected the steppers to the milling table. For these brackets please see: https://www.thingiverse.com/thing:2720575

So with these components I made this mini Mill. Because the table can only move 80 by 80 mm it’s not very big. But of course if you would use a bigger table, you can make the X and Y axis bigger.
As a controller I used an Arduino Uno and a CNC shield with DRV8825 drivers and GRLB python script found on the GitHub (https://github.com/grbl/grbl). In this case I just used universal Gcode sender for sending the Gcode (https://github.com/winder/Universal-G-Code-S