Homebrew PCBs

It cannot burn copper because of reflection, laser is light and copper is
shiny. I have seen some people trying to paint the copper with black heat
conductive paint, but I never saw the result. You would need quite a
powerful laser anyhow...

________________________________________
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of Juan EA7FNJ
Sent: lundi 19 janvier 2009 19:24
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Re: Burning Laser CNC

Thanks for the answer.

Well, a CO2 laser can engrave the copper directly (I think). But It's
so much more expensive than a DVD-RW laser.

How does a CO2 laser tube cost? I saw How it works and it' so impresive.