Apr 03, 2020 · Screw and glue. Coarse-thread pocket screws hold best in softer woods, such as pine, cedar, and poplar, as well as plywood; use fine-thread screws for hardwoods. Use coarse-thread screws for softwoods, MDF, particleboard, and plywood. Click to see full answer. Besides, can you screw into edge of plywood?