I wanted a robust portable workbench that was quick to assemble and dis-assemble, and that I could easily fit in the car. It needed to be light enough for one person to handle, but sturdy enough to carry a vice and a drill press. The challenge was to use hinges for fold-up legs but to make the bench stable at the same time. This was achieved with bolt-on diagonal braces, which attach & detach quickly with engineers bolts and wing nuts. The bench top is 1200mm x 650mm, height is 735mm (to match another table I use). The design is for indoor use (the fixings and boron treated framing timber would have a limited life if left out in the weather)
Step 1: Materials
A half sheet of 18mm plywood (1200 x 1200 x 18mm). 10m total length of 75 x 50 gauged (about 65 x 45mm) boron treated timber. The boron treatment makes it pink. Packet of 10g x100mm self-drilling screws, Jar of 8g x 45mm self-drilling screws, 8 x 100mm x 8mm engineers bolts and wing-nuts. 4 Hinges (about 65mm wide). 8g x38mm wood screws for fixing the hinges.