shaise
commented
2 years ago please post this issue on the freecad forum: https://forum.freecadweb.org/viewtopic.php?f=3&t=60818&p=551252&hilit=sheetmetal+workbench#p551252 and please attach the freecad file that is not working.
In FreeCAD 0.20, whenever I try to unfold I get this error: 09:43:23 Engineering mode is enabled. 09:44:51 Material found: 0.40ansi 09:44:51 This is a Manual K-factor{'kfactor': 0.4, 'standard': 'ansi'} 09:44:53 Manual K-factor is being used: 0.40 (ansi) 09:44:53 exception at line 2865('list indices must be integers or slices, not NoneType',) 09:44:53 ('list indices must be integers or slices, not NoneType',) 09:44:53 Traceback (most recent call last): 09:44:53 File "/home/mfraser/.local/share/FreeCAD/Mod/sheetmetal/SheetMetalUnfolder.py", line 2865, in accept s, foldComp, norm, thename, err_cd, fSel, obN = getUnfold(k_factor_lookup) 09:44:53 File "/home/mfraser/.local/share/FreeCAD/Mod/sheetmetal/SheetMetalUnfolder.py", line 2173, in getUnfold TheTree.Bend_analysis(f_number, None) # traverses the shape and builds the tree-structure 09:44:53 File "/home/mfraser/.local/share/FreeCAD/Mod/sheetmetal/SheetMetalUnfolder.py", line 1328, in Bend_analysis self.Bend_analysis(child_info[0], t_node, child_info[1]) 09:44:53 File "/home/mfraser/.local/share/FreeCAD/Mod/sheetmetal/SheetMetalUnfolder.py", line 1328, in Bend_analysis self.Bend_analysis(child_info[0], t_node, child_info[1]) 09:44:53 File "/home/mfraser/.local/share/FreeCAD/Mod/sheetmetal/SheetMetalUnfolder.py", line 1319, in Bend_analysis t_node = self.make_new_face_node(face_idx, parent_node, parent_edge, wires_edge_lists) 09:44:53 File "/home/mfraser/.local/share/FreeCAD/Mod/sheetmetal/SheetMetalUnfolder.py", line 1102, in make_new_face_node oppVertIndexes = range(len(self.__Shape.Faces[newNode.c_face_idx].Vertexes)) 09:44:53 TypeError: list indices must be integers or slices, not NoneType