Workbench v 0.1
Frame built, pieces nearly square. Imprecision in cuts and bore holes resulted in some torquing and gaps, but lag screws largely pulled pieces back to perpendicular.
Top at the moment is simply a loose piece of plywood to check for level. I’ll start building the tabletop this week (32 54″ 1×2′s, pulled tight by five threaded rods and nuts, then sanded flat and level). The tabletop will have four small recesses to clear the lag screw heads at the underside. It will be secured with 4 4½ lag screws up through the 2×4′s and into the tabletop.
I’ll probably add plywood cut to size atop the stretchers as a shelf, perhaps with backings for both that and the tabletop to keep anything from falling off the back. Ideally I’d craft and attach drawers on the underside of the tabletop, but that’s something entirely different to learn.
Full plans at Popular Mechanics.