Compact Electric Skateboard Assembly Guide

Hello everyone, My team and I are apart of a first year engineering design class at Campbell University. For our semester long project, we set out to create a compact electric skateboard making use of DeWalt batteries since regular e-board batteries are banned on our campus. Our project scope has recently ended and while not perfect, we wanted to post our assembly guide for anyone who wants to build a compactable, light weight electric skateboard suited for getting across campus. The guide that will be linked is simply a basis to follow, making your own adjustments is encouraged. (Adobe Acrobat)

Why do you think making your own CNC trucks would reduce the cost?