Re: [CAD_CAM_EDM_DRO] Re: Producing G code from a scan

Hi Bob,

HPGL could be converted to Gcode, but you'd only get 2 1/2 D or so, as
there is only a pen up/down, no true Z move. Might be OK for routing
sheets of material. Two finite Z positions could be selected for the
pen up and pen down positions.

The router could then run the Gcode.

Alan KM6VV


Bob McKnight wrote:

> CorelDraw will run an HPGL (hewlett packard graphics language)
> plotter. What would it take to have the router understand HPGL?
> The plotter looks like an x y axis router with a pen for the z axis.
> the router runs off step and direction signals for a stepper motor
> router. The HPGL would probably only be useable in the router
> for light duty work (the pen is very light duty).
>
> bob mcknight
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Dave Hylander
> <david@h...>
> wrote: > At 03:40 PM 5/19/2004 +0000, garagefella wrote: > >Hello all,
>
>>> This is my first post in this forum so please inform me
>
> if > >this query is in the correct place. > > > This is fairly
> straight forward to do ,as you have coraldraw, which lets > you export
> the scanned image to a .dxf format. Mach2 has a .dxf importer > to
> convert the dxf to g-code. > > > ~dave~ > > http://www.hylander.com >
> http://www.hylander.us
>
> Dave: You cannot simply export a bitmap into a vector format (DXF) in
> Corel or any other draw/paint program. While CorelDraw is a vector
> drawing program, and you can import a bitmap to display on the screen
> the only thing that will export in DXF is vectors you draw or import
> from another vector format. You can select the bitmap in CorelDraw to
> Trace but all it does is open up CorelTrace. The results you get from
> Corel Trace can be anything from usable to horrible for CNC work.
>
> There are other bitmap to vector conversion programs but they all
> struggle with giving you something you can use to cut in CNC. In the
> end the best way is to start with a vector format and end with one
> that has closed objects and continuous lines.
>
>
>
>
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