Scanything for large objects

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Sarriugarte
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Joined: Mon Apr 09, 2018 5:24 pm

Scanything for large objects

Post by Sarriugarte » Mon Apr 09, 2018 5:54 pm

I do a lot of sheet metal panels for cars and the scanything dxf file I created on a fairly small 2x3ft panel (40,000 + nodes) it crashes Inkscape when I use simplify. I have a new Arclight Pro Max 5x10 table. Running linux, scanything 2.0.11

motoguy
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Joined: Sun May 01, 2016 12:02 am

Re: Scanything for large objects

Post by motoguy » Mon Apr 09, 2018 10:58 pm

That's a ton of nodes. That many nodes used to crash Corel for me, too.

Can you place this traced file (with all the nodes) on a layer ("layer 1"), and then, on a NEW layer ("layer 2"), manually trace over the top of layer 1?

Or, does Inkscape have a "smoothing" tool (not function, but a tool) that can be ran around the part, to "blend" the nodes together? I used a tool like that in Corel yesterday, for a file that had a lot of nodes/jagged edges on the perimeter.

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Les Newell
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Joined: Thu May 11, 2006 8:12 pm

Re: Scanything for large objects

Post by Les Newell » Tue Apr 10, 2018 10:00 am

If you move the camera further from the part you are scanning you will get fewer nodes. This will also reduce accuracy so it is a bit of a tradeoff.
If you import the drawing into SheetCam it will automatically reduce the number of nodes. Depending on your drawing import settings (Options->application options->drawing import) this can be quite significant. Once you have the drawing loaded, set up a simple 'no offset' cut on it then use the dxf post processor to export it as a cleaned up dxf.

SeanP
Posts: 107
Joined: Wed Oct 23, 2013 9:50 am

Re: Scanything for large objects

Post by SeanP » Tue Apr 10, 2018 2:13 pm

Les Newell wrote:
Tue Apr 10, 2018 10:00 am
Once you have the drawing loaded, set up a simple 'no offset' cut on it then use the dxf post processor to export it as a cleaned up dxf.
That's another new one to me, nice one! I'll be trying that trick.

motoguy
Posts: 107
Joined: Sun May 01, 2016 12:02 am

Re: Scanything for large objects

Post by motoguy » Tue Apr 10, 2018 2:40 pm

Les Newell wrote:
Tue Apr 10, 2018 10:00 am
Once you have the drawing loaded, set up a simple 'no offset' cut on it then use the dxf post processor to export it as a cleaned up dxf.
I never knew Sheetcam had a DXF post processor. That's pretty awesome. Learn something new every day!

WyoGreen
Posts: 198
Joined: Wed May 07, 2014 10:02 pm

Re: Scanything for large objects

Post by WyoGreen » Tue Apr 10, 2018 4:28 pm

You learn something new every day! I had to fire up Sheetcam just now to check out the DXF post processor and sure enough, there it was. That's why I read thru all these posts, just to learn something new.

Steve

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