The height of the front rail cannot be adjusted.
In general it is the height reference also for
adjusting the back rail.
To adjust the height of the back rail do the
following steps: From the rear side of the
machine, loosen the 2 screws on the left back rail
support and the 2 screws on the right back rail
support (1). Slotted holes allow the adjustment.
Use the laser or any axis to measure and adjust
the height of the left fiducial on the back rail
while turning the adjustment screw (2). Adjust
the height of the back rail (same height as front
rail) and tighten slightly the 2 screws on the left
side. Do the same on the right side of the back
rail. Check height again, if the height of all 4
fiducial is the same (maximum deviation 0.1
mm), tighten all screws.
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