Make pcb with laser
Make pcb with laser engraver
Laser engraver is Laser cnc machine 50W, use 50% of 50W to engrave paint in copper layer.
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Part to make:
1. PCB copper https://amzn.to/3rrFKLZ
2. Paint spray https://amzn.to/3poJ08r
3. Copper etchant https://amzn.to/3BH02p8
3. Laser cnc engraver https://amzn.to/3xgAiNG