Source files for the Prusament Spool Bushing available at https://www.prusaprinters.org/prints/47039-prusament-spool-bushing
Made with Blender, a wonderful and free program for 3D modeling and so much more.
Besides the blender file, a screenshot of the Bolt Factory settings used to create the threads of the main bushing are included. These settings may be useful if you want to create similar threads from scratch. Similar is the keyword though as I also removed the bolt head and further customized the threads for this project.
Please keep in mind that these source files are for your personal use only. ^_^