Y Axis Endstop Clamp for 6mm Acrylic Prusa I3 with 8mm Rods

Needed to make a good Y Axis Endstop for the Acrylic Prusa i3
Mechanical Endstop V1.2
http://reprap.org/wiki/Prusa_i3

It fits neatly and the endstop touches the acrylic bed, allowing max travel.

3 x 3mm Cup head @ 16mm Long
3 x 3mm Nuts
3 x 3mm Spring Washers
Don't over tighten the Cup Head between the Rods, this is just to add a bit of tension, a small tighten is all you need.
If need be add some 8mm nuts to either side, depending on the fit on your rods..
I found it Not nec