Ok so do we have to use the vex edr structure or can we use tubing that we have laying around?
We ask you to please thoroughly read the VEX Robotics Comeptition Nothing But Net Game Manual and to please review the Q&A Usage Guidelines before posting in this forum.
Your question is addressed pretty succinctly in <R5>.
There are some exceptions and allowances, which you can find by reading the rest of the manual, but in general you’re restricted to VEX EDR parts.