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Subject: Re: [Homebrew_PCBs] Re: LPKF and Z axis

From: Russell <rjshaw@...>
Date: 2002-05-26

HW wrote:
>
> John,
> Thanks for all the links. I had one of them from before. There is so
> much stuff on scanners and building lasers. What I'm looking for a a
> place that will sell be one for cutting.
> Somewhere I found one link to an outfit that sold a laser engraving work
> station but the price was out of my class...

I'd think a laser powerful enough to melt copper (might need black
anti-reflection coating), would cause charring of the substrate.
If it was powerful enough for a clean cut thru the copper, then
once it does, it will zip thru the fibre-glass before you know
it, making for a rather dandy jigsaw puzzle making kit.
I could be wrong tho.

Maybe you could use the laser to burn off the etch resist coating
around the tracks and pads, then just etch in acid.