Re: Laser Engraving/cutting

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:

>
> Graham Stabler wrote:
>
> >I think once you are past the dark layer you are back to square one.
> >In general trying to cut AL is just not worth it and I think Jon's
> >estimated power may be on the small side for a decent cut quality
> >although I am not so sure for YAG.
> >
> >
> I'm no expert on laser cutting, but the IR reflectivity of aluminum

plasma

> is likely different than cold aluminum metal.
>
> >
> >
> Jon
>

That is one of the only reasons you can cut steel, the heating action
reduces reflection. It may depend on the dark layer but a paint for
example would just vapourize and on impart heat to the metal.

Grhaam