Z-axis adjustment upgrade for Velleman k8200

This is an upgrade that makes the z-axis adjustemt screw much more stable, and it wont loosen thanks to the locking nut.The things you need are:

1 x M4 locking nut
1 x M4 regular nut
1 x 12cm M4 threaded rod
and some super glue when mounting the knob.

You may also have to move out the micro switch a bit by putting some washers.