Joint for VW California tailgate camping chair

The joint between arm rest and legs of the california camping chair is a weak point and has to be replaced if broken. This is an improved and sturdy version in two different designs: one fixed by original 5mm blind rivets, the other to be fixed by M4x15 countersunk screws. I'd prefer the screwed version due to less material stress and easier disassembly.

This design was inspired by the work of "liliental"