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2D Autocad import unable to extrude.

6 REPLIES 6
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Message 1 of 7
inksterw
451 Views, 6 Replies

2D Autocad import unable to extrude.

inksterw
Observer
Observer

Hello all, I am looking for some input or assistance with extruding a part. It is a 2D sketch imported from Autocad. When attempting to extrude I get the warning, "A profile loop could not could not be repaired after sketch geometry was edited or deleted.". 

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2D Autocad import unable to extrude.

Hello all, I am looking for some input or assistance with extruding a part. It is a 2D sketch imported from Autocad. When attempting to extrude I get the warning, "A profile loop could not could not be repaired after sketch geometry was edited or deleted.". 

6 REPLIES 6
Message 2 of 7
JDMather
in reply to: inksterw

JDMather
Consultant
Consultant

The geometry has some issues.

Can you Attach the original *.dwg file here for diagnosis?

JDMather_0-1645303043652.png

 


-----------------------------------------------------------------------------------------
Autodesk Inventor 2019 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional


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The geometry has some issues.

Can you Attach the original *.dwg file here for diagnosis?

JDMather_0-1645303043652.png

 


-----------------------------------------------------------------------------------------
Autodesk Inventor 2019 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional


Message 3 of 7
Gabriel_Watson
in reply to: inksterw

Gabriel_Watson
Mentor
Mentor

Inventor is not ultra flexible to extrude anything you throw at it, if there are too many inconsistencies. Your best bet is to fix these issues in AutoCAD before you introduce the profiles into a sketch in Inventor. For example, look at this one, which looks fine at a distance, but up close is garbage:

 

Galaxybane_0-1645310700459.png            Galaxybane_1-1645310771533.png

 

In AutoCAD a couple of the tools I've used before for this were:

1) Select your polylines/curves and type "PE", then pick "Decurve", if most of the lines should be straight anyways;

2) Zoom into corners like the one above to fix them manually, or use the command "PEDIT" > "M" (for multiple) > JOIN > JOINTYPE > BOTH > "1.0" (fuzz distance), then trim any flying edges resultant from this.

3) Try importing from AutoCAD into Inventor by simply "copying to clipboard" those profiles and then right-click "Paste" in an Inventor sketch.

 

I hope this helps you figure it out on your own. Best of luck.

Inventor is not ultra flexible to extrude anything you throw at it, if there are too many inconsistencies. Your best bet is to fix these issues in AutoCAD before you introduce the profiles into a sketch in Inventor. For example, look at this one, which looks fine at a distance, but up close is garbage:

 

Galaxybane_0-1645310700459.png            Galaxybane_1-1645310771533.png

 

In AutoCAD a couple of the tools I've used before for this were:

1) Select your polylines/curves and type "PE", then pick "Decurve", if most of the lines should be straight anyways;

2) Zoom into corners like the one above to fix them manually, or use the command "PEDIT" > "M" (for multiple) > JOIN > JOINTYPE > BOTH > "1.0" (fuzz distance), then trim any flying edges resultant from this.

3) Try importing from AutoCAD into Inventor by simply "copying to clipboard" those profiles and then right-click "Paste" in an Inventor sketch.

 

I hope this helps you figure it out on your own. Best of luck.

Message 4 of 7
johnsonshiue
in reply to: inksterw

johnsonshiue
Community Manager
Community Manager

Hi! The sketch is a bit far away from the origin. To make your life easier, move the sketch geometry closer to the origin. When Extrude does not work, it usually means either the profile is leaky (having tiny gaps or drastic curvature change) or there is an Inventor bug. The quickest workaround is to use Boundary Patch command to create a planar trimmed surface. Then use Thicken command to create a solid body. BP was designed to tolerate leaky profiles like this.

Many thanks!



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer

Hi! The sketch is a bit far away from the origin. To make your life easier, move the sketch geometry closer to the origin. When Extrude does not work, it usually means either the profile is leaky (having tiny gaps or drastic curvature change) or there is an Inventor bug. The quickest workaround is to use Boundary Patch command to create a planar trimmed surface. Then use Thicken command to create a solid body. BP was designed to tolerate leaky profiles like this.

Many thanks!



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
Message 5 of 7
WHolzwarth
in reply to: johnsonshiue

WHolzwarth
Mentor
Mentor

Hi Johnson, I've played with it earlier, but only partly success.

Boundary patches can be done with 4 upper regions, but not with the lower regions.

One of the sketches turned pink, additionally. I couldn't repair it.

Walter Holzwarth

EESignature

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Hi Johnson, I've played with it earlier, but only partly success.

Boundary patches can be done with 4 upper regions, but not with the lower regions.

One of the sketches turned pink, additionally. I couldn't repair it.

Walter Holzwarth

EESignature

Message 6 of 7
inksterw
in reply to: JDMather

inksterw
Observer
Observer

Sure thing, thanks for the reponse.

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Sure thing, thanks for the reponse.

Message 7 of 7
johnsonshiue
in reply to: inksterw

johnsonshiue
Community Manager
Community Manager

Hi! The seemingly simple curves actually are quite complicated. Some of them are self-intersecting. I suggest you use SPLINEDIT command in AutoCAD to convert it to a PLINE. Then import it to Inventor.

Many thanks!



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
0 Likes

Hi! The seemingly simple curves actually are quite complicated. Some of them are self-intersecting. I suggest you use SPLINEDIT command in AutoCAD to convert it to a PLINE. Then import it to Inventor.

Many thanks!



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer

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