Nut and Bolt Pencil Cup

Keep pencils and fine craft tools close to your work in one desktop cup. This project also lets you explore how your printer handles threaded connections: try the wider nut fit when the closer one grips too tightly, rather than forcing the pieces together. The cup works as an organizer without a separate nut, so you can choose whether the thread experiment is useful for your build. Check the fit on your own print; treat the threaded pieces as part of a desk project, not as load-rated fasteners.