Brokkr - Introduction

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:  Details can also be found on the two corrosponding Reddit posts: and

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:

Subscribe to Hermod

Don’t miss out on the latest issues. Sign up now to get access to the library of members-only issues.