svg to dxf changes details

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knobba
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svg to dxf changes details

Postby knobba » Sun Jul 31, 2016 8:09 pm

I'm doing projects with my cutting-machine and to import the Inkscape designs into the Silhouette software I need to go through the dxf format.

I struggle to get the exact same result with dxf as with svg. Until now I have solved the problem by adding a bunch of extra nodes in the svg file before exporting to dxf, but as others seem to get it right I will learn what to do to make it correct - or is it a bug?

The threads I've found blames the tracing performance or something else, but that is not at least my problem as I'm not using tracing here.

When I export to dxf I use these settings as I've found recommended:
svg2dxfSettings.png
svg2dxfSettings.png (6.12 KiB) Viewed 5347 times


And here is the original and the resulting dxf. I cannot see the dxf problems before I reopen the file in Inkscape or Silhouette Studio.
svg2dxfProblems.png
svg2dxfProblems.png (32.98 KiB) Viewed 5347 times


What am I doing wrong? I'm fed up with this. It's details and I often don't discover the problems before I have cut the design and wasted some paper or vinyl.
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v1nce
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Re: svg to dxf changes details

Postby v1nce » Sun Jul 31, 2016 10:33 pm

Which version of inkscape ? Which platform ? Upload your original svg...
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knobba
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Re: svg to dxf changes details

Postby knobba » Mon Aug 01, 2016 2:30 am

I'm using v 0.91 on windows 10.

I've attatched the original svg example file, but was not able to upload the dxf file.
Attachments
testSvg2dxf.svg
(2.87 KiB) Downloaded 219 times
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v1nce
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Re: svg to dxf changes details

Postby v1nce » Mon Aug 01, 2016 4:53 am

no special problem here (0.91 ubuntu)
it is a bit offseted after export/import as dxf (and the width looks thinner) but it looks like the original
Attachments
exportimport.jpg
exportimport.jpg (35.38 KiB) Viewed 5298 times
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knobba
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Re: svg to dxf changes details

Postby knobba » Tue Aug 02, 2016 2:30 am

Are you suggesting that I should switch to Ubuntu assuming there is a problem with Windows, or am I just doing it wrong? It's quite a limited number of steps to do so I struggle to see what I can do differently.
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hulf2012
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Re: svg to dxf changes details

Postby hulf2012 » Tue Aug 02, 2016 4:12 pm

Hello
I was hoping this question was already solved, but I watched your last comment.

I'm attaching my results in my system, which it's also Ubuntu. I made around 4 tests. In the first test the results were similar to your results. The circle was drawn in a non perfect way when exported to dxf. In other tests using the LWpoly option the results were better but the circle was divided in several segments.

In this 4th test I added more points to the circle. When exported, the circle maintained a circular shape, but for one reason the hearts exported smoothed.

So, I give up :(

- Have you checked in the Inkscape's bugs page something related? Please follow the links that appear in Inkscape.org
- Why do you need to use the ROBO... option? In which manual or webpage does it say that. Maybe better results appear when that option is unchecked
- You can also export to plt format or hpgl format. Maybe your hardware can use those other formats
Attachments
testSvg2dxf4.dxf.zip
(2.79 KiB) Downloaded 183 times
If you have problems:
1.- Post a sample (or samples) of your file please.
2.- Please check here:
http://tavmjong.free.fr/INKSCAPE/MANUAL/html/index.html
3.- If you manage to solve your problem, please post here your solution.
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tylerdurden
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Location: Michigan, USA

Re: svg to dxf changes details

Postby tylerdurden » Tue Aug 02, 2016 10:00 pm

I usually have best results with no options checked in the export dxf panel.
2016-08-02_07-59-06.png
2016-08-02_07-59-06.png (84 KiB) Viewed 5194 times

looks ok here on my win 8.1 system
Have a nice day.

I'm using Inkscape 0.92.2 (5c3e80d, 2017-08-06), 64 bit win8.1

The Inkscape manual has lots of helpful info! http://tavmjong.free.fr/INKSCAPE/MANUAL/html/
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tylerdurden
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Joined: Sun Apr 14, 2013 12:04 pm
Location: Michigan, USA

Re: svg to dxf changes details

Postby tylerdurden » Wed Aug 03, 2016 1:16 am

P.S.

I did see the issue when polyline was checked, so I'd go with no boxes checked.
Have a nice day.

I'm using Inkscape 0.92.2 (5c3e80d, 2017-08-06), 64 bit win8.1

The Inkscape manual has lots of helpful info! http://tavmjong.free.fr/INKSCAPE/MANUAL/html/
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knobba
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Re: svg to dxf changes details

Postby knobba » Wed Aug 03, 2016 6:20 am

When you google "inkscape to silhouette studio" the first hits specify clearly that the Robo option should be selected.

Now I have tried with different designs with and without the Robo option selected and the results are quite confusing, but I think my conclusion is that the final problem is how Silhouette Studio interpret the dxf files. An example to illustrate my conclusion here:

Original svg and re-opened dxf files in Inkscape show an error in the file with Robo option selected
inkscapeDxfWheel.png
inkscapeDxfWheel.png (92.56 KiB) Viewed 5144 times


And then these dxf files opened in Silhouette Studio both with different errors:
SilhouetteDxfWheel.png
SilhouetteDxfWheel.png (41.7 KiB) Viewed 5144 times


So I guess the problem is out of the scope of this forum... And I will have to keep adding a bunch of extra nodes to preserve the details.
Attachments
testWheel.svg
(3.01 KiB) Downloaded 186 times
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tylerdurden
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Location: Michigan, USA

Re: svg to dxf changes details

Postby tylerdurden » Wed Aug 03, 2016 7:36 am

You might consider the upgrade to the cutter software. It claims to accept svg files.

http://www.silhouetteamerica.com/printe ... n-overview
Have a nice day.

I'm using Inkscape 0.92.2 (5c3e80d, 2017-08-06), 64 bit win8.1

The Inkscape manual has lots of helpful info! http://tavmjong.free.fr/INKSCAPE/MANUAL/html/
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knobba
Posts: 27
Joined: Tue Mar 02, 2010 4:35 am
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Re: svg to dxf changes details

Postby knobba » Thu Aug 04, 2016 12:24 am

I did upgrade recently, but the software had serious crashing issues so I downgraded. I'm happy to learn that svg will be accepted from now on. I will be looking forward to the next version, then :)
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