It's now time to slide your gantry to the rear and gently into the screw nut carriages on either side.

Do so slowly and carefully while trying to keep your gantry in-line.

Two shoulder bolts are used to join these two vital components together.

Lastly it's time to tighten everything up.

The 16 gantry screws:

Y couplers:

X coupler:

Z coupler: