[OpenSCAD] DXF for cut and engrave

nop head nop.head at gmail.com
Thu Oct 24 09:05:12 EDT 2019


There is no reason why a proper CAM program can't convert a thin cut equal
to the kerf into a single line down the middle.

On Thu, 24 Oct 2019 at 14:02, Troberg <troberg.anders at gmail.com> wrote:

> nophead wrote
> > The problem is a laser doesn't cut a line with zero thickness but people
> > pretend it does.
> >
> > You can model any object a laser can produce in OpenSCAD. What is needed
> > is
> > a CAM stage for lasers that creates the tool path, just as 3D printing
> and
> > milling. For some reason the CAM stage is ignored when laser cutting.
>
> No, quite the contrary, we rely on it having some thickness, but we can't
> model it with thickness, because that would make the laser cut twice.
>
> We do have a CAM stage. In my case, I use LightBurn, and it does create a
> tool path. But, for example, a living hinge, requires lines of minimum
> width
> (ie the kerf of the laser, typically around 0.1 mm). The way OpenSCAD
> works,
> I would need to model them as very narrow rectangles, which causes the
> laser
> to cut twice (slow, cuts a wider line, leaves more charring and increase
> the
> tendency of the material to cach fire). Sure, LightBurn can remove
> overlapping lines, but as it's a very narrow rectangle, they won't overlap,
> they'll just be very close to each other.
>
>
>
> --
> Sent from: http://forum.openscad.org/
>
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