Thread crest missing after boolean cut (Part_Cut) a ISO 4017 Hex head screw head with a cube (Part_Box), with Refine=true about freecad_fastenerswb HOT 13 OPEN

Could you give us a File and a picture similar to the first or third but with the green Box?

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Could you give us a File and a picture similar to the first or third but with the green Box?

For sure. I have updated my original message with the required information.

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I can see your Problem in your file, but I am just not able to reproduce it from scratch, seem to me that this may be a DEV build problem, my guess is the OCC version since this was changed to a newer one and made some Problems.
I do not think that this is a pure Fasteners WB problem, @shaise what do you think?
@lmutt when the next Weekly Build and if the Problem still exists (from new Objects and cuts to prevent corrupted files) and report about it.
I tried it with:

OS: Windows 10 build 19045
Word size of FreeCAD: 64-bit
Version: 0.21.2.33771 (Git)
Build type: Release
Branch: releases/FreeCAD-0-21
Hash: b9bfa5c5507506e4515816414cd27f4851d00489
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.3
Locale: German/Germany (de_DE)
Installed mods: 
  * DynamicData 2.60.0
  * fasteners 0.5.20
  * kicadStepUpMod 11.1.0

And with

OS: Windows 10 build 19045
Word size of FreeCAD: 64-bit
Version: 0.22.0dev.37213 (Git)
Build type: Release
Branch: main
Hash: 20e7deb86a8c6c2cd2378f09f8313760933f3a5c
Python 3.11.9, Qt 5.15.13, Coin 4.0.2, Vtk 9.2.6, OCC 7.7.2
Locale: German/Germany (de_DE)
Installed mods: 
  * DynamicData 2.60.0
  * fasteners 0.5.20
  * kicadStepUpMod 11.1.0

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Generating threads is notoriously problematic with OCC. Sometimes the generated fastener is not a perfect solid and this can cause issues when more solid manipulations are done. But this is not something that can be solved within Fasteners WB.

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As you said at the beginning, this specific problem seems to be related to the OCC version. Additionally, I noticed a strange artifact after cutting. (Please see updated the original message with "EDIT 2" and "EDIT 3").

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Sorry for more messages... but looking carefully at just the pure fastener, recently added, I found that artifact face, see:

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Could be related with #375 ?

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But this is not something that can be solved within Fasteners WB.

@lmutt could you open a FreeCAD Issue and also link in it to this one.

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