This project is called "mystical fins". We made surfboard fins that are different than normal and work for surfing. the materials and tool I used were a computer and Tinker cad. I learned how to utilize Tinker Cad a bit better. the most challenging part was finding the length out. I didn't think that the lengths would be a big part. to resolve this we found the measurements of the bottom of the fin. the most fun part was styling the fin. Going through this process i learned how to use Tinker Cad better. I also found out that its helpful to find actual lengths of different fins. If I could change one thing I would extend the width.