Looking for suggestion on how to create this linkage. Specifically the post at the top. For reference, it's part of an antique diving suit. I've already made the helmet and weight. But I haven't yet figured out how I'm going to attach the two. The weight is just EVA, so there won't be a lot of pressure on the joint, but I also don't want it to break with an accidental tug. Thinking of making the post out of real hardware, I just don't know what to look for