The best method for using wood shims is to insert them in pairs between the two surfaces you’re trying to move or support. When shimming a door, for example, shims are inserted from each side of ...

Shims are flat pieces of wood that can be anywhere from 6 to 10 inches long and have a taper. One end of a wood shim is normally about 1/16 inch thick while the other end is about 3/8 inch thick ...