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trimming profile of extrude thin error

Posted: Mon May 16, 2022 12:12 pm
by colt
I have a simple extrude thin that I want to split into two bodies.
BEFORE TRIM.JPG
I perform the trim. The preview is there.
TRIM.JPG
I get this error.
ERROR.jpg
Deleting the extrude and recreating does not solve the error, so the problem lies in the sketch. I was able to get a rebuild if I fully delete and redraw on side of the profile.

Is there a better way to recover?

Re: trimming profile of extrude thin error

Posted: Mon May 16, 2022 12:22 pm
by DanPihlaja
I am not sure exactly why, but you now have to use the contour select tool.

Solidworks is getting confused for some reason.

So, if you use the contour select and then select the 2 contours, the error goes away.
image.png

Re: trimming profile of extrude thin error

Posted: Mon May 16, 2022 12:36 pm
by Glenn Schroeder
I'm confused. Here's what I got when I opened your Part.

image.png

Re: trimming profile of extrude thin error

Posted: Mon May 16, 2022 12:50 pm
by DanPihlaja
Glenn Schroeder wrote: Mon May 16, 2022 12:36 pm I'm confused. Here's what I got when I opened your Part.


image.png
I was able to recreate his error by creating my own part, then trimming the sketch.

Re: trimming profile of extrude thin error

Posted: Mon May 16, 2022 12:52 pm
by AlexLachance
I'd suggest, rather then having equations, keep the original feature of your thin that does a sort of n, and then have an extruded cut on it to do the "trim" you desire.

Re: trimming profile of extrude thin error

Posted: Mon May 16, 2022 12:59 pm
by colt
Glenn Schroeder wrote: Mon May 16, 2022 12:36 pm I'm confused.
Yeah sorry, I attached the wrong version of the part. The one I attached was after I replaced one half the profile just to try to get rebuild.

@AlexLachance That would get the job done. For my case, I would rather keep it self contained to one feature.

Re: trimming profile of extrude thin error

Posted: Mon May 16, 2022 1:13 pm
by AlexLachance
colt wrote: Mon May 16, 2022 12:59 pm Yeah sorry, I attached the wrong version of the part. The one I attached was after I replaced one half the profile just to try to get rebuild.

@AlexLachance That would get the job done. For my case, I would rather keep it self contained to one feature.
Having one feature is generally better, but since it seems to be "varying", I'd figure maybe you'd prefer having a second feature to handle the trimming, so that you don't have to manually edit the feature each time you modify it so that the selections adjust themselves accordingly.

The reason you have to use the contour option is because the line segments are not coincident and therefor SolidWorks concider this as an "open profile" rather then a thin extrude