FreeCADView Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002831 | FreeCAD | Bug | public | 2017-01-07 13:24 | 2017-01-08 22:34 |
| Reporter | gfindernig | Assigned To | normandc | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | closed | Resolution | won't fix | ||
| Product Version | 0.16 | ||||
| Summary | 0002831: Fusion fails with error message | ||||
| Description | When fusing a cube to a fusion of 2 cubes operation fails and resulting object shows error message "Resulting shape is invalid" | ||||
| Steps To Reproduce | See attached protocol "Action_Protocol.txt" and source file "BugReport_20170107.FCStd" | ||||
| Additional Information | All files in attached "Debug.zip" | ||||
| Tags | No tags attached. | ||||
| FreeCAD Information | |||||
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This is a common problem with Boolean operations caused by FreeCAD's geometric modeling kernel (OCC). It's bad practice to apply Booleans on objects that share many coplanar and coincident faces. This issue is explained here, it's written for OpenSCAD but relevant to FreeCAD: http://www.iheartrobotics.com/2010/01/openscad-tip-manifold-space-and-time.html As explained in the "READ THIS BEFORE REPORTING" link, you should have posted first in the FreeCAD forum to avoid filling the bug tracker with known and unfixable issues that already have easy workarounds. |
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This issue has been mentioned repeated times on the forum, it's due to the OCC kernel over which the FreeCAD team has no control. It's easily worked around by slightly changing the modelling method and/or the order of Booleans. The forum is the place to ask for such matters. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2017-01-07 13:24 | gfindernig | New Issue | |
| 2017-01-07 13:24 | gfindernig | File Added: Debug.zip | |
| 2017-01-08 22:31 | normandc | Note Added: 0007574 | |
| 2017-01-08 22:34 | normandc | Note Added: 0007575 | |
| 2017-01-08 22:34 | normandc | Status | new => closed |
| 2017-01-08 22:34 | normandc | Assigned To | => normandc |
| 2017-01-08 22:34 | normandc | Resolution | open => won't fix |
