Main cap girdles re-discussed

So, IF I were going to design a girdle, here's how I'd do it.

I'd take the set of main caps, cut from something very high tensile. It would need to be a heat treatable material. I would then design a corresponding girdle (or girdle pieces) out of very thick plate cut from the same material.

Then I would have it professionally welded together on a proper fixture. This thickness of material would require well controlled pre and post heating practices. But in the end you would have all caps and the girdle tied together.

This whole thing would have to be heat treated most likely. Then it would have to be machined to final form.

It would all be quite expensive. But cool. It would probably add a fair bit of rigidity to the system.