The test showed the result was much better than the last one. I tried to change as close as the feedback I'd gotten. The problems are : the rubber band are not strained enough to keep the spinning good; the size is not precise between two rolls; and the balsam wood is easy to craft but too soft for a firm structure.
Mrs. Blachnitzky once again asked me to change my idea, maybe somehow add more some "second element" into my model to make it more interesting. hmmmm.... I'll give it a try.
