This is a huge worktable that you can make in a few hours. We made the frame (shown on the right) out of 2 inches x 3 inches (35 x 65mm) spruce. It is a very straightforward layout that was fastened solely with self-tapping wood screws. If some increased rigidity is required, the layout of the frame allows for a long angled gusset to span between the undershelf and the parts of the frame just below the tabletop. As you can see from the image on the right, we omitted these stiffeners.