There is another post here

Help drawing tube....

, they used the revolve, you can also.
The revolve can be any angle, like 180 degrees in your case.

I kind-of understand the phrase (see pic) but when it actually gets applied, not a clue. And from what I read it seems backwards. I know now to keep it checked.
jmaustpc, thanks for the footwork on figuring out how that works, this might fix a few of my models.

And issue
https://www.freecadweb.org/tracker/view.php?id=3942

which is the "Tab" request as a feature.

Scanning my last few brain cells, I did report this and resetting my config files fixed everything.

I will check later, gotta go.

I have all selected in Visibility, that doesn't fix it here. I have seen this issue for over a year, I just toggle and move on. OS: Windows 7 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.16093 +17 (Git) Build type: Release Branch: (HEAD detached at 0.18.1) Hash: f7dccfaa909e5b9...

I've seen this, I presume it's well known. I attached a file, if you open the last sketch and close it the model disappears.

The reason I export is the toponaming issue, drawings can be corrupted. I'm hoping this is fixed soon and a then we can all use Techdraw.

I export CAD direct from Part Design to 2D DXF. TechDraw will do many things you want to do but maybe not all of them as yet. I'm so comfortable in AutoCAD with all it's tools, placing limitations on drawings is very frustrating to me so I still need to export. The conversion from inch to mm is 25.4...

See the information on feature editing. Unlike other CAD programs, when using PartDesign in FreeCAD, the resulting object must always be contiguous. If you try to create a solid that is detached from a previously created solid, the operation will fail. To expand on the above, the concept is that a ...

Exception (Sat Apr 20 09:42:09 2019): Access violation OS: Windows 7 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.18.16093 +17 (Git) Build type: Release Branch: (HEAD detached at 0.18.1) Hash: f7dccfaa909e5b9da26bf50c4a22ccca9bb10c40 Python version: 2.7.14 Qt version: 4.8.7 Coin v...