I have one of those k40 co2 lasers.
I spray paint the pcb with black spraypaint and let dry.
Then I use the laser engraving function to burn away the paint Where copper must be exposed.
Works a treat and I set my laser at 5% power.
I had a 200mw red laser setup on my cnc mill some time ago and it burned through a plastic cd case(black), (so i guess paint will be no problem) so I was actually also considering buying a led laser engraver off Banggood, and also adding a pcb drill to the rig. Then i can etch and drill without moving the pcb.
Alignment pins and holes would take care of other side pcb alignment
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I spray paint the pcb with black spraypaint and let dry.
Then I use the laser engraving function to burn away the paint Where copper must be exposed.
Works a treat and I set my laser at 5% power.
I had a 200mw red laser setup on my cnc mill some time ago and it burned through a plastic cd case(black), (so i guess paint will be no problem) so I was actually also considering buying a led laser engraver off Banggood, and also adding a pcb drill to the rig. Then i can etch and drill without moving the pcb.
Alignment pins and holes would take care of other side pcb alignment
Sent from my iPhone