Homebrew PCBs

> > Has anyone thought of a Yag laser for PCBs?
> > I see people are actually 'milling' the unwanted copper off the 
> > boards.
> > 
> > 
> > Yags are great for copper (On CO2 lasers, copper is a BIG no-no) 
> and 
> > the beam can be delivered via fiber optics with a Yag.  Plus you 
> > cna 'drill' the holes without a tool change.  Get fancy and you can 
> > adjust to focus for bigger/smaller kerfs (though not recomemned)
> > 
> > Nice chemical free way of doing it (at least chem free before PTHs)
> 
> 
> Here is a high speed PCBoard drilling machine that uses a 
> 
> laser.http://www.hitachidigital.com/laser.html
> 
> 
> 
>        

really nice thing...

but seems they also don't drill the copper - they use co2 laser...


i wonder how it is possible to drill the resin and the glassfibers in a so
similar time that there is a smooth nice hole drilled. 


(i also don't believe the yag laser milling will work, but that's only my
opinion.....)

regards
stefan

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