Follow the table for the recommended mounting locations

Take note to skip 2 holes between fasteners, and make sure to mirror this process from each of the end of the rail until you meet in the middle.

For rails with an odd number of mounting holes, the pattern will overlap in the middle

For rails with an even number of mounting holes, the pattern will be continued across the rail

Pre-install all the M3x8 SHCS screw and Sliding T-nuts

Install the Printed T-nut guide on the end of the X axis extrusion, and slide the rail on to the X-axis from Right to left

The guide helps to slide the T-nuts into the extrusion