Measure the available space in the desired cabinet location using a measuring tape to determine the width, depth and height of the cabinet.
Sketch the cabinet layout on graph paper. One graph square can equal 6 inches of cabinet layout to keep measurements simple. Note the cabinet measurements on the sketch. Also, mark the door widths and shelf positions on the sketch.
Transfer the width and height measurements to two pieces of 1/2-inch-thick pine or hardwood. Using a table saw, cut these sections to size. One of these sections forms the back of the cabinet. Measure the horizontal center of the other section and cut the pine or hardwood in half at this measurement to form the cabinet doors.
Measure and mark two sections of 1/2-inch hardwood or plywood to the height and depth of the cabinet. Cut these sections to size to form the sides of the cabinet. Measure and cut two additional sections to the width and depth of the cabinet to form the top and bottom.
Cut sections to 1/2 inch shorter than the cabinet depth, and to 1-inch shorter than the cabinet width as needed to form the shelves.