Arp Pcb Mill

Created by @arp2019-dev

Total Time: 5 hours

June 16th: Working on the Main structure

Worked on the main structure, which is a simple 3-axis router-style CNC. Using a small 775 DC motor spindle with ER11 collets. And Nema17 Motors with 8mm leadscrews due to cutting forces. The structure is a 2040 aluminum extrusion for its cost, simplicity, and rigidity. For rails, I'm using MGN12H for x and Y, and then MGN9H for z. I will now work on the motor mounts and add all the connecting plates, as well as a small clamp for the copper clad.

Base Structure: Screenshot 2025-06-16 at 3 51 48 PM

Mount area for copper clad: Screenshot 2025-06-16 at 3 57 13 PM

Gantry structure for the y-axis: Screenshot 2025-06-16 at 4 14 17 PM

X and Z gantry: Screenshot 2025-06-16 at 4 58 03 PM

Spindle Mount: Screenshot 2025-06-16 at 5 15 10 PM

Yaxis Motor: Screenshot 2025-06-16 at 5 49 33 PM

Motion System: Screenshot 2025-06-16 at 6 16 03 PM

Total time spent: 3h

June 16th: Working on the motor mounts and BOM

LMAO it's done, did this for the PCB mill challenge and just locked in for 5 hours and designed it. I added all the brackets and motor mounts. Mostly 3D printed. The copper clad will be held down using double sided tape.

Screenshot 2025-06-16 at 8 07 46 PM

Total time spent: 2h