Pine lumber is cut from evergreen trees, many kinds of which are abundant all across the globe .Pine lumber is one of the best of all the building materials for shelving.
Particleboard is an often overlooked shelf material. It is strong, has a hard, flat surface and finishes out nicely. Particleboard more economic.
Economy Fir Plywood
Builders often use economy plywood for building shelves. It is light and has good resiliency. When using economy fir plywood for shelves, two common problems occur: holes in the edge of the plywood and defects in the surface. Defects can be cut out, and holes, or "voids," in the plywood can be filled with putty.