Two simple pieces that add 3 quite useful centimeters to the depth (along the Y axis, I mean) of your Z axis support in the SmartrapCore V.1. With this, you can still use the original Z axis support pieces : screw these extension pieces on the box back wall with wood screws, then put the original support pieces in place with M3 bolts, and tighten them in with M3 nuts inserted in the cavities. And there you go! :) NB : it works pretty fine with the endstop Y extension pieces : http://www.thingiverse.com/thing:774794 ;)