Prepare the laser type and power for PCB engraving

Ruddy

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Laser marking

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2024-10-14

hello everyone,
I found an example of PCB design online. In practice, the base is painted black and the paint burns out in areas where copper must be removed through reverse circuit design. Then etch with acid.
The laser head must be installed on the CNC instead of the spindle, but I don't know the power and cost of this instrument.
Is one of these lasers suitable for drawing?

Marshall

2024-10-15

It can also be done with a low-power laser, I used 2.5W.
The only problem is that no matter how persistent you are, the paint will leave a layer of residue, which can cause problems when using acid.
Last time I thought I cleaned it with a short bristled brush before getting sour, but I may need to be more patient with the acid.

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