1. For the boom, cut a 1/4- by 5 1/2-inch strip from the sheet of balsa.
2. Glue on the boom at a right angle, 1 inch up from the bottom of the mast.
3. For a sail, cut a right triangle from the cloth that measures 5 1/2 inches wide and 6 1/2 inches tall.
4. Sand and paint the boat parts before affixing the sail. Put a few drops of glue in the drill hole, then insert the mast.
5. Spray the finished boat with a silicone sealant.
