Re: Corel draw 12 hpgl-plt file not true curves?

Jimmy,sure enough the plotter setting was 1016, changed to 99999
(YEAH) increased size of drawing (it's very easy to scale on danplot)
copied to floppy, to machine, works great as far as appearance with
test pencil drawing. I suppose I had this setting all along on my old
corel 11 and didn't remember to set on the new software. I really
appreciate your help.
Tom Caudel, I found the free demo but haven't tried it out yet. Looks
like something worthwile for my needs. Was woundering if there is
any way to eliminate the DOUBLE lines you get with Corel, if this
software deals with that issue. Thanks for your help also Gary
Rutledge

> > I am by no means an expert but I do Some engraving and work with
> > corel draw 9 for my engravings, HPGL has always out put straight
> > lines for curves. HPGL-2 was supose to do true curves but I have

not

> > had any software that would read HPGL-2 files and work with my
> > machines, The only thing I can think of is you may have a coarse
> > output for your HPGL Files. With corel draw 9 when you save as

PLT

> > file I have a box that pops up for the plt output settings and

under

> > the Page Tab there is a Plotter units setting, the standered for

HPGL

> > output is something like 1016, this is how many line segments per

1"

> > lines, if this is set to coarse or if you make your drawing to

small

> > for your final output you will see the line segments in the
> > engraving. When I do My drawings i set the page size to the size

of

> > my plate I will be engraving so I don't have to scale the drawing
> > after I export it. I don't know anything about corel 12 but it

should

> > have simular settings somewhere.
> > I hope this helps some,
> > Jimmy
> >
> >
>
> Commercial interruption:
>
> The problem with CorelDraw (any version after 9 up to 12 w/SP1
> applied) is that the HPGL export filter is broken (uses course
> segments for curves no matter what you pick in the output), and DXF
> does not output curves either. Because Corel uses Bezier curves
> (complex math curves with two points) the translation to curves that
> have a start, end and radius (i.e. G-code G2 and G3) is not very

easy.

>
> To get true 4 node circles and complex arcs made from arc segments

try

> DXFTool
>
> Free Demo at http://www.candcnc.com/DXFToolDetails.htm
>
> NOTE: Only works with CorelDraw ver 12 and up because full VBA was
> not supported in Corel prior to that.
>
> It outputs good DXF files in a format most programs like SheetCAM

can use.

>
> Although primarily for Plasma cutting there are free CDR (Corel
> format) artwork/clipart on the CandCNCSupport Yahoo Groups site in

the

> Files/Artwork section. Good for testing DXFTool.
>
> Now back to your regular programming............
>
> Tom Caudle
> www.CandCNC.com
>