The two Frame Side Support Rear panels
have a square access hole and four ½”
(12mm) holes. The four holes must be
oriented on the bottom of the Assembly. They
provide access for belt routing and bearing
adjustment needed in later steps.
Step 1 To build the Rear Assembly of the X Frame:
Align the tabs of the Rail Supports (X1) into the slots in the
Frame Side Rear Support (X5). Secure with three M4 x 16
Machine Screws and Nuts for each Rail support as shown