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OP please test on a more recent version of FC. Also please print the contents of Help > About FreeCAD > Copy to clipboard Forum thread: https://forum.freecadweb.org/viewtopic.php?f=10&t=20161 |
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This is a typical error with Boolean operations on threads. There are tens of topics about this on the forum, and I feel the reporter should have opened a forum topic first rather than adding yet another report about this well-known issue. This is also the recommended procedure in the "READ FIRST BEFORE REPORTING" link. The fix is simple, rotate Sketch001 on the Z axis by a few degrees (actually it can be as small as 0.005 degrees) to make sure the seam edge of Pad's inner cylindrical surface is not aligned with the Sweep starting end. We've always assumed it's an OCC issue, thus unfixable in FreeCAD, which is why I'm surprised it works in Salome. This new info sheds some doubt to this assumption, but FreeCAD developers would need to figure this out. On the other hand, more info on what OCCÂ version is used by Salome, along with the Salome file would be appropriate. |
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@jouke please respond to the above requests. ^ |
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@jouke ping |
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@jouke please reupload attached file. It was lost in the recent backup. Sorry for the inconvenience. |
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Re-uploaded fixed file. The only change compared to jouke's original is the rotation of Sketch001 as explained in comment #0007972. |
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I've messaged @jouke (hopefully the same person) on the forums (https://forum.freecadweb.org/memberlist.php?mode=viewprofile&u=14914) |
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Sorry for the late reply ... I kind of lost track of this issue. I tested the file on OS: Ubuntu 16.04.2 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.17.11051 (Git) Build type: None Branch: master Hash: 32176dba86db44775be51c5d8514a229fb27111f Python version: 2.7.12 Qt version: 4.8.7 Coin version: 4.0.0a OCC version: 7.1.0 And the holes are still there (I haven't re-tested the Salome option). Turning the sketch works though. Thanks for the feedback. Jouke |
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... and the Salome file and versions Screenshot_2017-05-12_13-46-46.png (234,804 bytes) |
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Thanks! CC @NormandC |
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@normandc do you mind linking my existing dupe tickets to this one if they exist on the tracker? |
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Unfortunately the Salome screenshot does not tell us on which OCC version it is based on. OCC has not even reached 7.2.0, so the 7.5.1 version number shown is unrelated. |
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I found the Salome 7.5.1 Release Notes (on which Salome-Meca 2015.1 is based on). http://files.salome-platform.org/Salome/Salome7.5.1/SALOME_7_5_1_Release_Notes.pdf It is based on OCC 6.8.0. It has been patched by the Salome team to fix some issues, but their descriptions in the PDF do not seem related to the current issue which in any case still exists in FreeCAD 0.17 using OCC 7.1.0. |
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Out of curiosity, I downloaded a Ubuntu 16.04 Binary of SALOME 8.2.0 and launched it, opened the JY.hdf file and exported it to BREP so I could open it in FreeCAD 0.17. The Part Check Geometry tool reports multiple "BOPAlgo_InvalidCurveOnSurface" errors with RunBOPCheck parameter set to true. No errors if RunBOPCheck is set to false. Next I opened the JY-2.fcstd file and set the document to recompute (right-click on the document label in the Model tree) and refreshed the document. This fixes the issue, and Check Geometry with RunBOPCheck set to true reports no error. The issue would appear to be resolved in the following FreeCAD version. OS: Ubuntu 16.04.2 LTS Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.17.11704 (Git) Build type: None Branch: master Hash: ea708c14b0c87b4217e9d6d548f7aebff742c19c Python version: 2.7.12 Qt version: 4.8.7 Coin version: 4.0.0a OCC version: 7.1.0 Locale: French/Canada (fr_CA) |
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@normandc is this an upstream issue then ? If this is solved feel free to resolve/close it. Thanks! |
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Closing as is fixed by upstream in OCC7.1 |
- Anonymous
