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Subject: Re: [Homebrew_PCBs] laser ablation of paint on copper clad

From: Camillus <camillus_blockx@...>
Date: 2014-12-09

Well i gues that depends on the heat you can produce with an 3W Laser. I know it is possible to pop a latex balloon, so that makes me wonder, if you use latex based paint like acryl then maybe, probably you have to go a couple of passes, but that is or should be no problem.

camillus

On 12/8/2014 10:44:24 PM, 'Jeff Heiss' jeff.heiss@... [Homebrew_PCBs] <homebrew_pcbs@yahoogroups.com> wrote:

 

I’m mentally exploring the idea of spray painting copper clad with spray paint and drawing traces in the paint with a laser.  After the laser, the board is then placed in etchant and the copper exposed by the laser is etched away.   I understand this is possible with 20W CO2 lasers by Youtube videos but has anyone explored this with a laser diode?  Is the  abundant ebay 445nm, 1W laser or the 808nm, 3W laser up for the task paint ablation?

 

Jeff



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