Today we finalized our sketches and built our first iteration. We made it out of cardboard, duck tape, pencils and hot glue. We used cardboard to make the treadmill and the wagon and the wheels the treadmills sits on. Then, we used duct tape as a carpet mill and attachted it to the treadmill base. We then looked up diagrams of treadmills and learned how they work and proposed a plan using pvc pipes for the rollers.