Just for future reference - I continued getting these errors. So I made CMake configure, recreated the solutions (Generate) cleaned the build and made a full rebuild - all works now.

Trying to compile latest master (3e86f98d7af799d4f41cdb9854f7ed62383bed53) I get the following errors: 1>------ Build started: Project: fc_version, Configuration: Release x64 ------ 2>------ Build started: Project: NETGENPlugin, Configuration: Release x64 ------ 1>Generating version_check 1>git 1>E:...

OS: Windows 8.1 (6.3)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.21982 (Git)
Build type: Release
Branch: master
Hash: 11419ecfafb4029e21fa9860b3d65bb5807bdf50
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Bulgarian/Bulgaria (bg_BG)

The decision has already been made. Just go with the default of all boxes checked. Please dont :( Do I need that extra base plane after paste? . Unnecessary duplication.JPG . Suppose I have very similar shapes derived from a master sketch. So I draw one sketch and try to reuse it and instead of red...

Might be some tension in Z axis when the head is under that height (or above it) - something might be touching where it should now. Please inspect closer movement along Z axis in that area.

Create triangular sketch, groove around center line of hexagon.

Hole feature uses sketch just to determine where to drill the holes. It does not take any other info - just positions of arcs/circles inside the sketch. Just note that the sketch must be proper closed one for the Hole feature to work.

The STL looks Ok, PrusaSlicer slices it Ok. Could it be a problem with your printer at that height? This looks around the hole on the other side - can you show pictures of the other side? Had you printed other models in the mean time?

Does not DynamicData workbench do the same?

Set the upstream: The thing with the compare become a mess so I scraped it all and created a new clean fork. Then set upstream as per your suggestion. Just for clarity when I need to sync my fork to upstream again what are the minimum commands necessary? I assume: git fetch upstream git merge upstr...