Small 3D-Printed PCB-CNC

This is a small, mainly printed small table router for anyone who just wants to try out whether a CNC router or engraving machine is something for them. Ideally, you already have some of the required parts such as stepper motors, power supplies etc. lying around.

I have wanted to build a CNC milling machine or a CNC engraving machine for a long time. Simply out of technical curiosity, I couldn't imagine any real use other than engraving PCBs. So I wanted it to be inexpensive, but with the best possible features.
So I came up with the idea of designing a CNC machine with as many 3D printed parts as possible to keep costs down. All the parts fit on the print bed (220 mm x 220 mm) of my 3D printer.

The result is a machine with the following data:

- Work volume (xyz)mm: 120 x 120 x 60
- Frame (xyz)mm: 275 x 275 x 320
- Motor: DC motor, 24V, 200W, 52mm diameter
- Spindle: 10000rpm
- Axes: 3 x NEMA17
- Controller: Arduino Uno with GRBL shield
- Firmware: GRBL 1.1
- Special f