Rostock Max Assembly Guide
27
12 – Adjusting the Top Support Plate
12.1 - Pick a tower and align the Idler Mount's engraved reference line to the top of the rail and
tighten all four bolts - make sure that
BOTH
reference lines are aligned with the top of the rail. I chose
the Z axis to begin this step.
MAKE SURE THAT THE IDLER BRACKETS ARE FLAT AGAINST THE INSIDE SURFACE OF THE
T-SLOT RAIL MATERIAL!
Figure 38 - No gap between the rail and top!
12.2 - If any gap is present here, the machine will be misaligned and cause you no end of
problems. If you cannot get the gap closed on a tower, loosen the base of the rail a little bit. This will
often allow the gap to be closed at the top. Just don’t forget to re-tighten the base and make sure it
hasn’t moved off the alignment line!
12.3 - Using your tape measure or meter stick, measure from the bottom of the top base plate
(the part that the heated bed is attached to) to the top of the top plate. Record this measurement. The
measurement on mine came out to 715.5mm
12.4 - Using the measurement you obtained in the prior step, adjust the other two towers to
match that distance and tighten down the four bolts on each Idler Mount as you go.
Make sure you measure on both sides of the Idler Mount. Each side will float a bit until the Top
Clamp screw is tightened.
12.5 – Tighten the screws in the top of each Idler Bracket to lock the Top Plate in place.