I have been trying to get the pieces and parts together for a desktop CNC machine. Starting with a pen to make a pen plotter, moving to a rotary tool like a Dremel, and maybe moving up to a router.
I started by playing around with old CD drives, but couldn't get the project completed (didn't have the material to make a stand) before I found a bunch of old scanners and printers to make a larger machine. Started tearing into those which would give me plenty of material to mount with, as well as all of the moving pieces.
I was also gifted some NEMA stepper motors, and my work was disposing of some 15-series 8020. So, I am copying the design from this imgur post: https://imgur.com/a/fGsQB1L. Details can also be found on the two corrosponding Reddit posts: https://www.reddit.com/r/somethingimade/comments/99ruqw/i_made_a_desktop_cnc_machine/ and https://www.reddit.com/r/hobbycnc/comments/99v0hr/i_made_a_desktop_cnc_machine/.
I am slightly modifying it due to what I have on-hand. The source material uses 10-series, and has 1" x 1" and 1" x 2", where I have 1.5" x 1.5" and 3" x 3" material to work with. I have also salvaged some linear rails from an inspection device that was about to hit the scrap pile. This might also be the source of some shafts for the X and Y axis, but due to the rust on them, I'm not sure how they'll hold up (assuming they're the right length).
FreeCAD project file if you're interested in dimensions/size is available here: https://kruug.org/content/blog/DesktopMill.FCStd