By Adalheid Voigt. Midcentury. At Friday, January 11th 2019, 19:20:22 PM.
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.
This drastic reduction in wood´s moisture content is important so that the wood doesn´t warp or shrink with changes in humidity and temperature. Warping or shrinkage can destabilize your sofa, and even cause it to lose its shape. You would not see that happening in a quality sofa. Air drying can also work well, but since often times the process is not controlled enough, so you cannot be sure that the wood‘s moisture content is sufficiently reduced.
Never buy a sofa without first trying it out. Sit on it, lie on it, try it out the way you would use it at home. If you like napping on your sofa, make sure that the arms are the right height. Make sure the cushions and the back are as soft or firm as you want them to be.