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Ok. Thank you. Verry Good information. 1. I want to paint a PCB with ordinary thin layer spray black and to remove it with laser 2. After to remove cooper with normal solutions used to have circuit board (conventional methods) 3. Must use solder mask to cover it. And here I quit thinking to do...

thank you again for this gold information's I swear from hart to have some patience to read all I will write, please, for a good understanding All I know is I what make pcb's (my own for my small projects home and to produce some prototypes) possibilities are : 1. 405 nm to burn tinny...

you guys have perfectly right. thank you so much for information's. And I appreciate your straight response First one I don't want to spend extra money for my scope Is normal for every one who don't have a clue about this staff to think like me. My idea was to make pcb's like "diachi", after...

To be honest I don't have a clue about lasers, ... just what i read on internet some explanations ( escuse my bad english ) I found this site who sell laser diodes, kit, etc ... https://sites.google.com/site/dtrlpf/contact-info maybe are many sites but this was found for the moment I need...