The hardest part in the design was probably finding the lengths I needed to stick the two parts together, (the cone and the cylinder) and the spinning knife inside it. The spinning knife part was hard because I needed to hot glue it, and it was hard for the knife to spin without the two parts sticking together. Some thing that I would like to change is add supports, because it’s very hard to put it on a bottle/cup. I also need to make it look better, because there is basically nothing on it. The cylinder on the top is also slightly larger than the cone, so it makes it look ugly. By creating the project, I have learned several skills like how to ‘Visualize’ things better, so I can see the basic shape or length that I need to cut. Overall, this project feels kind of successful, but there are still several flaws to the design that I need to fix.