Fake Exoskeleton rollcage project

I once saw a car with a multipoint internal 'cage' made from 40mm plumbing tube painted silver. Bends were 90degree connectors. Reinforcement and diagonals were added with pipe cement.
All done as a wind up for friends and family, it actually looked very convincing until close inspection.
I think all in it cost him £25, would have been less if he'd used black tube, but white, painted bright silver, was a bit more obviously in your face.

Usual cages are 32mm iirc. You can get 3 meters of 30mm waste pipe pretty cheaply. I bout 6 meters of 40mm for about £8 the other day so 30mm will be cheaper. In addition if you got it from an online source, or possibly approached a local independent supplier they may be keen to get on board seen as its for a good cause.

Plus, it’s fairly brittle in comparison to some materials which is an advantage for various reasons.

Yes, so it can inflict a cutting injury instead of a blunt force trauma injury.