HC Maker 7 Y axis bed stabiliser

The HC Maker 7 is a large format printer with a 315x315 build plate. Unfortunately the Y carriage rolls back and forward on a set of six V wheels with quite a small wheel base (approx 50mm). This makes the whole built plate quite unstable and when printing it does rock up and down quite a lot during Y axis movements.


Additional Parts Needed:
+ 2 x LM8UU linear bearings.
+ approx 470-480mm SS 8mm smooth rod
+ 5 x M3 hex nuts
+ 5 x M3x12 pan head machine screws


My friend who owns this printer wanted the probelm corrected and I suggested a new carriage with wider wheel base and replacing the four T profile extrusions that make up the Y frame with much longer ones. He didn't want this so in the end I came up with this compromise solution.


1. A top and bottom bearing block which bolt together across the 3mm steel carriage plate with M3 nuts and bolts. A pair of M8 linear bearings are pushed into each end of the bottom block. This grips the