What you did with your Series 2 in March

[Ken]

Made them all from sheet. For the upstands I made a simple jig from MS plate to form the swaged stiffener, two halves, the top with a ' letter box' cut out in the shape of the swage and the same cut out for the lower half but bevelled to allow the sheet to move when I knocked the bar into it. I rounded off a short piece of ally bar, 5/8th inch diameter.
The 2 formers were bolted together sandwiching the sheet which I'd cut to shape and preventing it from distorting when formed and knocked the ally bar into the letter box using its length. It worked fine.
Everything else was angle iron and the vice.
It needs a lot of care to start the curves in the right place.
I usually use CAD for these things, cardboard aided design, cereal boxes are best !