Sienci Labs LongMill MK2, Assembly Manual

Page: 43 / 86

43
Left side
Right side
At the left side of the X-axis rail, slide the coupler on until it bottoms out on the lead screw. Firmly secure the
coupler at the set screw using an M3 Allen key.
Just like for the Y-axis, use both hands on the right side to thread a locking ACME nut into the lead screw so
that it pulls it flush to the flange bearing and brings the coupler flush against the other bearing. While holding
this tension in place, firmly tighten the set screw on the ACME nut. This makes another ‘bolted sandwich’ where
everything should be touching bearings (as pictured) and the lead screw should only be allowed to rotate, and not
move side-to-side.
Left side Right side
Use M3 Allen Key