All my free 3D printable files for various fiber tools are at: https://www.printables.com/social/179...

I'll release more details about the drum carder prototype in a future video.

The printers in this video are the Prusa i3 MK3S and Prusa XL. These are pricier printers, but the printers are reliable tools that require less setup than some other printers. Also Prusa releases a lot of open source software and I like supporting companies that do that.