Prusa i3 Z-Axis:

You will need a "z-axis-top" with a hole for the leadscrew rod as below.

https://www.printables.com/model/389924-mk3ss-z-axis-top

https://www.prusaprinters.org/prints/57941-mk3s-z-axis-tops-improved

https://www.prusaprinters.org/prints/105202-mk3ss-z-axis-top-remix

Prusa MINI Z-Axis:

I haven't tested it with the Prusa Mini, but I believe it can be attached to Z axis using an 8mm magnet.

Print settings: 

• Filament: PLA, PETG
• Layer height: 0.15mm
• Supports: no
• Perimeters: 2