10. I have a 3d printer for about 5 years. Sometimes I don't do anything with it for months, then I suddenly have some kind of project which eats all my spare t

10. I have a 3d printer for about 5 years. Sometimes I don't do anything with it for months, then I suddenly have some kind of project which eats all my spare time. I just finished a RC car which I created from scratch using Autodesk Inventor. Even learned how to 3d printed molds to create rubber parts. I guess for 3d printing you should also have an interest in cad design. Otherwise it becomes a bit boring.