Now that we have built the frame and the Y-axis is operational, we can focus on the Z-axis. This will allow to lift the extruder and print new layers. As the layers can be 0.1 mm in thickness we will need a stepper motor that is capable to turning in small steps.
The 6 mm aluminum frame cutout can now be mounted on the base of our frame. We could leave it as is, but adding the extra 10 mm threaded rod supports will give it that extra stability. The extra rods will also give us place to mount other additions to the printer.