After several months of use the front and back scale shields on the hydraulic forging press, which I use as work shelves, began to sag. The front one was especially bent down and things were sliding off regularly so it became a big enough nuisance to deal with.
I removed the bolts, bent the angles back to 90º and welded a perimeter of angle to form an edge around the shelves and make them more rigid and form trays. This has worked nicely and well worth the time involved. The front tray is 6.5” x 15” and the back tray is 14.5” x 15”.