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IDProjectCategoryView StatusLast Update
0004149PartDesignBugpublic2020-01-07 17:07
ReporterIgor_De Assigned ToKunda1  
Status closedResolutionno change required 
OSLinux MintOS Version19.2 
Product Version0.18 
Summary0004149: Freecad crashes or spoil solids on fillet operation
DescriptionFillet works wrong (or crash Freecad) if side of fillet goes to cilindrical surfase combined from 2 different extrusions.
Steps To ReproduceTry to apply fillet on edge in attached file.
Additional InformationOS: Linux 4.15.0-64-generic
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.14555 (Git shallow)
Build type: Release
Branch: (HEAD detached at 0.18.3)
Hash: 3129ae4296e40ed20e7b3d460b86e6969acbe1c3
Python version: 2.7.15
Qt version: 5.12.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Russian/Russia (ru_RU)
TagsNo tags attached.
FreeCAD Information



2019-09-28 09:13


Fillet test.FCStd (11,588 bytes)
Edge.jpg (44,506 bytes)   
Edge.jpg (44,506 bytes)   


2019-09-28 09:22

reporter   ~0013691

One more edge to crash.
Edge 2.jpg (27,234 bytes)   
Edge 2.jpg (27,234 bytes)   


2019-09-28 10:40

reporter   ~0013692

Last edited: 2019-09-28 10:49

View 2 revisions

The same problem on 0.19 version.
I've tested it :
OS: Linux Mint 19.2 (X-Cinnamon/cinnamon)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.18323 (Git) AppImage
Build type: Release
Branch: master
Hash: af2e97da7b21d4e5ffef587c97f3ab99e720cd59
Python version: 3.7.3
Qt version: 5.12.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Russian/Russia (ru_RU)


2019-09-29 13:30

developer   ~0013693

@Igor_De : this is a well known limitation caused by interaction with seam line. ;)
If you need more information or think there is more to do, please open a forum topic according guidelines in the big yellow box on top of the page. Thanks. :)


2019-09-29 19:18

reporter   ~0013694

If it is a "well known limitation" - it shold not completly crash software ;-)
Just show message: "Impossible"


2019-09-30 00:46

administrator   ~0013697

@openBrain do you know if this is listed in the Known Issues thread, btw?
Is there a ticket open for this crash bug already ?


2019-09-30 13:34

developer   ~0013699

@Kunda1 : 0002715, 0003436, 0004076 IMO describes the exact same issue.
0003310, 0003970, 0003977 may be same kind of issue.
0003142, 0003554 describes other known limitations of (tricky) fillet/chamfer tools.
Unfortunately I think all cases are OCC issues. :/


2019-09-30 13:41

developer   ~0013700

@Igor_De : this is sensible but not so simple. 0003436:0012736 can be of interest for your understanding. FC uses external pieces of software, especially OCC as a geometric kernel. Limitations (as cases where they appear) are multiple. Raising a ticket for each basically clutters the tracker, that's why we ask you to post to forum first. In this case, your file would probably has been added to an existing ticket as test case. ;)
Notice that refining your model before filleting solves the issue. :)


2019-09-30 19:11

reporter   ~0013701

Thanks a lot (for detailed answer and for Freecad).
Sorry for delay - I had no time for answer.
And sorry for troble - my English is still not so fluent.
I am novice in Freecad, but not in design.
I studied russian lessons and articles.
It makes me cry (it looks like mind masturbation).
So, I am going to make good manuals/lessons for russian language.
That was the reason for this ticket.
Let's close this ticket (I have no rights to change ticket state).

Issue History

Date Modified Username Field Change
2019-09-28 09:13 Igor_De New Issue
2019-09-28 09:13 Igor_De File Added: Fillet test.FCStd
2019-09-28 09:13 Igor_De File Added: Edge.jpg
2019-09-28 09:22 Igor_De OS => Linux Mint
2019-09-28 09:22 Igor_De OS Version => 19.2
2019-09-28 09:22 Igor_De File Added: Edge 2.jpg
2019-09-28 09:22 Igor_De Note Added: 0013691
2019-09-28 10:40 Igor_De Note Added: 0013692
2019-09-28 10:49 Igor_De Note Edited: 0013692 View Revisions
2019-09-29 13:30 openBrain Note Added: 0013693
2019-09-29 13:31 openBrain Status new => feedback
2019-09-29 13:31 openBrain Tag Attached: #tobeclosed
2019-09-29 19:18 Igor_De Note Added: 0013694
2019-09-29 19:18 Igor_De Status feedback => new
2019-09-30 00:46 Kunda1 Note Added: 0013697
2019-09-30 13:34 openBrain Note Added: 0013699
2019-09-30 13:41 openBrain Note Added: 0013700
2019-09-30 19:11 Igor_De Note Added: 0013701
2020-01-07 17:07 Kunda1 Assigned To => Kunda1
2020-01-07 17:07 Kunda1 Status new => closed
2020-01-07 17:07 Kunda1 Resolution open => no change required
2020-01-07 17:07 Kunda1 Tag Detached: #tobeclosed