You can learn more about this project here: https://www.instructables.com/id/Diy-Basketball-Hoop/
The diameter of the basketball hoop should measure 6 inches in order for it to look proportionally sized to the backboard.
I am 17 years old and I started with 3D printing in March of 2017. This all started with some inspiration and motivation, which came from school and youtube videos. I own the Anet A8, which I feel all beginners should start with. It teaches you much more about 3D printing than just buying a pre-assembled one. My current interests include robotics, programming, designing, laser cutting and of course…3D printing.