[Issue] Bug when creating substractive Helix

[pinpox]

Is there an existing issue for this?

• I have searched the existing issues

Forums discussion

No response

Version

0.20 (Release)

Full version info

[code]
OS: NixOS 23.05 (Stoat)
Word size of FreeCAD: 64-bit
Version: 0.20.2.Unknown
Build type: Release
Python 3.10.10, Qt 5.15.8, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.2
Locale: English/Denmark (en_DK)
[/code]

Subproject(s) affected?

None

Issue description

I'm trying to create a substractive Helix in the Part Design Workbench.
The preview looks fine:

But when creating it, it just breaks the part in a strange way:

I'm trying to build the substractive helix from a sketch that is on a datum plane.
I have attached the project file here

Anything else?

soap_threaded.zip

Code of Conduct

• I agree to follow this project's Code of Conduct

[luzpaz]

Subtractive helix is getting love in the dev branch. Please test on development branch
Also be sure to check:
https://github.com/search?q=repo%3AFreeCAD%2FFreeCAD+subtractive&type=issues&state=closed
https://github.com/search?q=repo%3AFreeCAD%2FFreeCAD+subtractive&type=issues&state=open

[pinpox]

I managed to work around the issue above, but have run into other issues with the substractive helix. I would like to try the dev branch, but the AppImage is throwing errors when I try to run it.

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/pinpox/.cache/appimage-run/555b14f187ef6534afe33aff1cc61ad6065fe2a47aab954fe047a39bfb53d0c0/usr/lib/python3.10/site-packages/shiboken2/files.dir/shibokensupport/feature.py", line 139, in _import
    return original_import(name, *args, **kwargs)
<class 'ImportError'>: libpci.so.3: cannot open shared object file: No such file or directory
libpci.so.3: cannot open shared object file: No such file or directory
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/pinpox/.cache/appimage-run/555b14f187ef6534afe33aff1cc61ad6065fe2a47aab954fe047a39bfb53d0c0/usr/lib/python3.10/site-packages/shiboken2/files.dir/shibokensupport/feature.py", line 139, in _import
    return original_import(name, *args, **kwargs)
<class 'ImportError'>: libpci.so.3: cannot open shared object file: No such file or directory
libpci.so.3: cannot open shared object file: No such file or directory

Shouldn't the AppImage be self-contained and have that file in it?

[luzpaz]

<class 'ImportError'>: libpci.so.3: cannot open shared object file: No such file or directory libpci.so.3: cannot open shared object file: No such file or directory

FreeCAD/FreeCAD-Bundle#147 (comment)

[luzpaz]

@pinpox can you please try the workaround referenced in the linked ticket and report back ?
I'm closing this ticket for now as it seems this is a duplicate. If it's not a dupe, please re-open.

[pinpox]

I got the dev version to work. The original substractive helix problem seems to be gone. Freecad crashed on me when working with substractive helix though, but I can't pinpoint it to a specific task.

I have noticed the performance of (substractive) helix is very poor though. Creating a substractive helix and doing a polar pattern with it (20 repetitions) took freecad about 3 minutes to compute, on a reasonably speced computer (i7 24GB Ram), is that to be expected?