Re: XY point list for spiral to DXF?

Jon,

Thanks for your response and links to your programs. I need DXF for
the shop that water jets our parts. They do not take g code.

Tom Eldredge

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
>
> rutexusa wrote:
>
> >Gentlemen,
> >
> >I tried to make a spiral within Turbocad without success.
> >
> >So...I plan to write a short basic program to generate an
archimedean
> >spiral with particular dimensions that I want to have waterjet cut
out
> >of sheet metal. Then I will have a list of coordinates. I want
to
> >inport this list to a cadd program to do a little more editing and
> >which will give me a dxf file ready to cut for the waterjet
company.
> >
> >Does anyone know of a program/way which will allow me to take a
simple
> >list of coordinates and produce a dxf file for input to a cadd
> >program?
> >
> >
> Why don't you go STRAIGHT to G-code, and skip the *^% DXF?
> For the most basic sort of approach, take a look at my "makebore"
> program, the first one at http://jelinux.pico-systems.com/gcode.html
> This makes an expanding "spiral" out of 90 degree arc segments.
> The same scheme could be used to make the spiral in, say, 15 degree
> segments that would have an imperceptible discontinuity at the
joints
> between the segments. The source code is in c compatible with both
> Microsoft and Linux, but the basic algorithm should be pretty
readable.
>
> >Is there a better way of doing this without buying another
expensive
> >cadd program?
> >
> >
> Yes. G-code really is simple, and a lot easier for humans to read
and edit
> than dxf.
>
> Jon
>