Axis Level Checker

thingiverse

Just a simple tweak to fit your Anet A8 clips on the upright and manually move the Z axis down each side until the piano wire barely touches. Don't forget to secure your probe! Piano wire, or dowel, plastic rod - whatever works for you, just make sure it slides freely and attach something to the top to prevent it from slipping through. Alternatively, bend the wire as shown to create a stop point.