Bread Tie Prototype

thingiverse

This is a proof of concept test for a sort of spring loaded bread wrapper tie. Overview and Background Assembly Instructions 1) Print the attached model with support, yielding a large cylinder with 2 small pins, and a smaller cylinder. 2) Remove all of the support material. when complete the small cylinder should easily slide though the large cylinder. 3) Bend one leg straight of a 35 mm paper clip. With small pliers bend the tip of that leg 90 degrees for a length of about 2 milimeters. It will act as a hook to pull the rubber band through the 3 mm holes. 4) Put the small cylinder in the large cylinder and align the 3 mm holes, so that the small cylinder sticks up above the large cylinder. 5) Put the papper clip leg through the holes so it pops out the other side. 6) Hang the rubber band on the hook. 7) Pull the rubber band half way into the cylinders. 8) With your fingers, hook the rubber band around the pin. 9) pull the hook the rest of the way through the cylinders. 10) Pull the hook up, and hook the end of the rubber band around the other pin. 11) Remove the hook from the rubber band. The print should be functional at that point. Lesson Plan and Activity blank Materials Needed I used these bands to be the spring. http://www.kmart.com/goody-ouchless-girls-clear-mini-elastics-100-pcs/p-038W006389924001P one large metal paper clip, with a very slight bend near the end . http://i62.tinypic.com/dx1qp0.jpg Duration of Lesson blank Preparation blank Rubric and Assessment blank References blank