With caution, lift the gantry assembly and bring it above the newly assembled frame.
Position it so that it lays at the back of the frame, on the transversal aluminium profiles.
Bring the 2 wedges on the sides of the frame, as shown in the animation, and start tilting the gantry. It should rotate slowly, pivot on the wedges when it reaches them, and finally stand straight above them.
Animation
Pay attention to the orientation of the gantry: the spindle is facing front and the Y-axis motors are at the back.
Ask a friend to come and help you for this step. It can be quite challenging, especially for the L-size model.
