I have used a CO2 laser with Thermark with ok results. Here is a picture on
a stainless steel knife but copper clad was the same thing (no pics):
http://www.fullspectrumengineering.com/forums/viewtopic.php?f=3&t=51&start=10Thermark is a permanent bond and provides excellent solder mask. We had to
sand off areas we wanted to solder to however.
<
http://www.fullspectrumengineering.com/forums/viewtopic.php?f=3&t=51&start=10>The
CO2 laser beam is diffraction limited to around .005" so .010" lines is more
realistic.
My advice is to just use inkjets if you need to etch it away anyway as it is
100x faster.
In other news, I have used a 1064nm 100W yttrium fiber laser and was able to
ablate copper directly in my experimental setup at a significantly higher
price.
On Thu, Dec 30, 2010 at 12:55 PM, Kim <kimvellore@...> wrote:
>
>
>
> I think considering the ease of use and the mess factor of using the powder
> paint or toner powder, it will dissuade one going that path.
> As far as using the CO2 lasers the problem with paints and burning off
> paints is some of them leave a oily residue after burning up that is
> difficult to take off. It works for most applications but if you are making
> fine lines and want clean edges then you will want to use Asphaltum, you get
> it in craft shops or dickblick online. The power in a CO2 laser is adjusted
> by the frequency of pulses and each pulse is ON at max power. If the
> material vaporizes on a single pulse then no matter what low settings you
> have it will not work for melting and fusing.
> Keep us posted on how it goes.
> Kim
>
>
>
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