Homebrew PCBs

At 04:35 PM 09/06/03, you wrote:

> > Feedrates!!!!
> > I'm a CNC CO2 laser tech now.  We can etch material.
> > Its all power to speed ratios.
> >
> >
>I have never tried using this method, although I have quite a bit of
>experience with lasers. Just off the top of my head, I see a problem. The
>copper is not "even" on top of the clad. If you look at it with a magnifier,
>you will see low spots and high spots. Even with varying feedrates you will
>get burn marks in the substrate wherever there is a low spot in the copper.
>I could be wrong about this as it is theory and not actual practice, but if
>I am, could you please post a URL showing the project? I would also like to
>see more on this.
>
>-Mike

I know this is really off topic for the group but have either one of you 
tried to cut say
through a few feet of styrofoam? Always been curious if a laser would work 
in place
of a hotwire saw.

Dave