I WAS going to ask who's body was hidden behind the sheet!
I love this thread, some shops make me happier about my space, others, not so much.
I don't know if they still ship them this way, but when I was building my airplane, I went to the local motorcycle/snow machine dealer, and found they get their stock in steel frames. Perfect for a table support.
It's worth a try. Easier than building one out of lumber. They don't break down, so you need a pickup or better to haul one home. I had a couple of them for bases in my Kitty Hawk/Wright Brothers shop.
Also, while I'm thinking back that far............(Yes, a LONG time ago)...I got some countertops, solid as heck, from a local cabinet/countertop outfit. Mistakes, over-runs, client changed their mind, etc. They were happy to get rid of them. These make an excellent work surface, they are heavy, solid, and cheap. What's not to love?
Jeff