"swivel top nuts for

[Crusty]

Actually that's a failed brazed connection because I couldn't get it hot enough with the tools I had at hand. Eventually I'll add a couple of TIG spot welds to the bottom now that I've got more argon, but really that's not needed because it's forced together when it's pushing and never works in tension, and the press fit is tight enough to keep the parts together otherwise. I know it won't win any industrial art prizes but it was only intended to solve an immediate problem without wasting too much time.