take the 31/2'' blocks that you put together, and center, glue, and nail the top and bottom 4x4'' pieces to it. Make sure the hole in the top piece is directly above the opening in the pieces of wood. (smaller 31/2'' that were cut earlier) once this is done, take the long piece of wood and place it inside the opening. it should fit snuggly, but slide easily. If it does not, sand or cut out more from the sides. once you do this, get the 1/4'' dowel, and put it in the small hole in the mechanism. (long piece of wood) mark the dowel so just a small bit goes above the top 4x4'' piece. cut and glue inside the hole. Now, take the thin scrap wood and cut a piece that is about 1/2'' bigger than the back of the mechanism. making sure the wood is inside the opening, glue to the back, and add a small nail if you wish. You should now have a working dispenser, with out the jar on top.