Using 4x M3x8 socket head screws mount the MGN9 spacer to the MGN9 rail at the 5th and 6th hole from each edge.

Using 4x M3x8 socket head cap screws mount the MGN9 rail to the X 2020 extrusion and 4x M5x8 button head screws and 4x M5 T nuts on the backside.

Using 4x M3x8 countersunk screws secure the MGN9 block to the MGN9 carriage.