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IDProjectCategoryView StatusLast Update
0004285FreeCADBugpublic2020-03-10 18:28
Reporterfc_tofu Assigned To 
Status confirmedResolutionopen 
Platformx64OSWindows 10 
Product Version0.19 
Summary0004285: PartWB Bevel/Chamfer command invert surface normal
DescriptionPartWB, Bevel/Chamfer on 3D Offset solid (positive distance)/Thickness solid causes inverted surface normal.
Steps To ReproduceReproduce 1:
1. Create a plane object. Copy and move apart for comparision.
2. use "3D offset" command on above planes to make solid("Fill offset"), one with positive offset, other use negative offset.
(Here found another minor issue, "3D offset" command won't toggle off planes' visibility after generating new feature history.)
3. "Chamfer" command on abvove solids.
3.1 surface normal on positive offset solid is inverted, except chamfer area.
3.2 for comparison, surface normal on negative offset solid is correct.

Reproduce 2:
1. Create cube 100mm * 100mm * 100mm.
2. Select top face, use Thickness command, 10mm thick
3. Select any edge
4. Chamfer(or Bevel) 5mm.
Result: surface normal invert except Chamfer area.

Additional InformationSolid from Extrude/Revolve/Loft/Sweep is not affected by this bug.

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TagsChamfer, Part
FreeCAD InformationOS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.19858 (Git)
Build type: Release
Branch: master
Hash: dbe292496b56147c081761084774f42bda56ea90
Python version: 3.7.3
Qt version: 5.12.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Chinese/China (zh_CN)



2020-03-10 14:31


Issue History

Date Modified Username Field Change
2020-03-10 14:31 fc_tofu New Issue
2020-03-10 14:31 fc_tofu Tag Attached: Chamfer
2020-03-10 14:31 fc_tofu Tag Attached: Part
2020-03-10 14:31 fc_tofu File Added: fc019pre_bevel_on_3doffsetsolid.FCStd
2020-03-10 14:31 fc_tofu File Added: fc019pre_partwb_chamfer_on_thinkness.FCStd
2020-03-10 18:28 openBrain Status new => confirmed