Quote Originally Posted by Davek0974 View Post
If we bring in the plates that are fixed to the rear side which connect the X axis carriages to the gantry rails, it works out very nicely i think - the plates are directly connected to the z axis carriage positions.
Click image for larger version. 

Name:	z plate 3.pdf 
Views:	187 
Size:	15.0 KB 
ID:	17604
Plates are dimensioned as 15mm. bottom two are the gantry lower/upper sides and top one holds the z motor
Dave Think you have been got by Classic Gotcha.?
How are you going to access the holes for fastening the rear plate to the bottom bearing plate.? The Z bearings fasten from back side so can't fit when rear plate is fastened. You'll need to Lift the bearings so can access the bolts.