In this video, we learn how to make an automatic rubber band gun. You will need a wooden ruler, shoe lace, rubber band and tape. First, tie a small knot with a hole in the shoe lace and put the ruler through it. Next, get your tape and put a good size piece around the shoe lace on the ruler. Now, roll the shoe lace downwards and place the rubber band on one end of the ruler to the other. Keep going until you have as many rubber bands as you want. Now, pull on the rubber bands and release, this will shoot them out.