Wanhao Duplicator i3 z-rod fixing

Since the z-rods - on the Duplicator - are not well connected to the frame (on the lower side they just pluged into a hole and sitting on the Stepper) i designed this solution to fix them.
you just need 4 x M3x18 and 4 x M3x8(or10) screws and 4 x M3 Nuts.

Tip:
to prevent that the stepper fall down when loosing the screws - just put something under the stepper :)

the x axis should be on a lower position