By Adalheid Voigt. Midcentury. At Wednesday, January 09th 2019, 01:11:32 AM.
In a good-quality frame, the joints get special attention. They are glued, dowelled, and screwed. The corners are further strengthened by the addition of reinforcing blocks for extra support and strength. Generally speaking, plywood and particleboard frames are inferior, especially if they are held together with staples. Additional layers of plywood can help reinforce the frame, so as you can see, construction matters as much as material. If you must choose a sofa with a plywood frame, make sure it has at least 11 to 13 layers of plywood.
The eight-way hand tied springs system is one of the best support systems. The craftsman connects each spring to the adjoining one with a strong twine. The twine passes front to back, side to side and then diagonally in both directions, thus tying each spring securely. Another method is sinuous spring construction. Sinuous springs are “S”-shaped and run from the front of the seat to the back. These springs are supported by additional wires that cross from side to side. This also makes for a strong seat, and it might be the preferred option in a sleeker style or smaller frame because it requires less space.
A large built frame, a pair of cement columns, interesting sculptures, or large pots can serve as a stable base for a piece of 1/2 inch thick beveled-edge plate glass, cut to the perfect size. This is a good option for a very small space, as you can place the bases as close together or as far apart as you wish and have the glass cut to fit your space. Keep in mind that the larger the glass, the heavier it will be. So the bases need to be sturdy enough to support the weight.