Sugar rocket V1

Hi! This is my first design for the new hobby i started regarding DIY sugar rockets. I want to spend as little money as possible, and use the material i have at home. This design is nothing new, there is alot of people that have done better designs that involves try & error, mathematics and research for years. But living in Sweden and using metric system, i came up with this using Fusion360. So far, the loading of clay and rocket fuel is working very well.