It is after all a simple ball and socket joint; it has certain loads imposed on it; it needs reliability over a defined life; it must contain materials suitable for the working environment.

I'm trying to get into blanching it and freezing so I don't have to buy veg over the winter, but then you need loads of freezers, and that's not ideal . . .

Designed for hauling heavy loads over rough roads, the covered wagons could carry as much as six tons of freight; each one was handcrafted from wood (including oak and poplar).