Building Childrens Furntiture - Lumber
One of the unhappiest experiences the home furniture maker can run into is buying a piece of wood and then finding it's just a little too short. Because of shrinkage and varying standards of mill planing, there is a difference between the actual "net" size of dressed lumber that you get from the lumberyard and the nominal size that you order. However, plywood is sold in the exact dimensions as offered. Board lumber nominally 1 inch thick will actually measure from 3/4 to 7/8 inch (usually 13/16 inch). And its actual width will be 3/8 inch less than its nominal width, in pieces between 2 and 6 inches wide; in wider pieces the difference will jump to 1/2 inch. Similarly, dimensional lumber of 2-inch nominal thickness actually measures 15/8 inches.
So be specific about the size you want, and check the extent that the dressed lumber varies from the rough-cut size.