The assembly was difficult because of all the gluing, so I fixed it.

I raised the rail thickness by 1mm to guarantee the strength. I designed an 8mm to 10mm folder to accommodate the thickness of the pen. Also, no bearings are needed. A number of M3 screws are needed for assembly.

See the remix source for assembly.

B.stl is not in the original, but would be necessary as it would eliminate the need for extra wooden parts.

The printer I use (180 x 180mm) is a little undersized and I was frustrated that I couldn't print on it, so I fixed it. Most people won't need it. https://www.thingiverse.com/thing:4607191

I didn't like the pen folder, so I put it together with a different design, with M3 screws to hold the pen in place. https://www.thingiverse.com/thing:4637226

I recommend this firmware because the Y axis is reversing the motor. https://github.com/imaicom/GRBL-28byj-48/

https://denshiman.com/Arduino_mini_CNC_plotter.html https://denshiman.com/cnc.html

https://www.youtube.com/watch?v=Pyx6eILtui4

https://x.com/imaicom/status/1852952829432140162