Re: Producing G code from a scan

--- 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.