I made mine out of 16 gauge black arn, notched them with cutoff wheels and had a
sheetmetal shop do the longer bends. It was quite a job welding them in (especially
since I had recently begun wearing bifocals and had not done much gas welding in
a looooooong time). I was working in the Army craft shop at Albrook AFS in Panama
and spent about 5 weekends, leaving my old body pretty stiff for a long time.
It came out pretty well, finally.
Since you are somewhat younger and more current on such things than I was at the
time, I think you'll do OK.
--
George Downs, Bartlesville, Heart of the USA!