CNC 3018 Pro - Z-Axis extension

This parts can be mounted to the default z-axis of the CNC 3018 Pro.
Use a M4x80 screw to fix the parts to the z-axis.

Print each part from the blender file seperately. Use M3 Screws to fix
the parts to the main extension.

This Design contains 2 laser mounts and 1 endstop mount.