3D printing

I Went through the vex manual but I couldn’t find anything on the legality and if legal the constraints of 3D printed parts does anyone think they can help me?

Not for VRC, for VEXU yes. The manual speificallh says what you can use other than Vex components in R7

So what these guys did is not ok?

And when you say vexu you mean vexedr correct?

VEXU is Vex at the University Level. VEX VRC is MS/HS level. Since VCAT is a University level team, it was completely legal for them to print parts