there are formulas for cone layout, see: viewtopic.php?p=667598#p667598

I have installed version 0.21.1 on Windows 11 with the installer, no problems. But 0.21.2 doesn't have an installer.
How do I upgrade or update or install 0.21.2 ?

A while back I had some settings that were messed up, and restoring C:\Users\Owner\AppData\Roaming\FreeCAD\ didn't work. Another user said to also backup [HKEY_CURRENT_USER\SOFTWARE\FreeCAD\FreeCAD\Qt5.15] from the registry, which has worked in the past. Now I have a setup on Linux, how would I back...

I don't have the link but there's a good YouTube video on a manifold that covers this.

You said it, fix resolution to work with the program as needed. Creators of programs have no control on what monitor someone buys. Just my thoughts.
I have some programs also where I can't use the highest resolution.

@heron thanks for reply. And it is still there just hidden. So I will show solved and just toggle visibility off which seems to work.

Or I will duplicate original and rotate as needed.

When I opened this post viewtopic.php?t=71482 my browser minimized, any idea why? However I couldn't duplicate the behavior. Mouse was nowhere near the minimize icon upper right on WIndows 10.

WIndows 10, latest Firefox browser.

If I had: m1.png Then did a mirror: m2.png But I no longer need the left elbow. And I may need to move and rotate the new mirrored elbow. Edit: Deleting it leaves an error with recompute failed: m3.png Just example, there are other cases where I just want the new mirrored object. And this in in draf...

OS: Windows 10 Version 2009 Word size of FreeCAD: 64-bit Version: 0.20.2.29177 +426 (Git) Build type: Release Branch: (HEAD detached from 0.20.2) Hash: 930dd9a76203a3260b1e6256c70c1c3cad8c5cb8 Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.3 Locale: English/United States (en_US) Installed...

Sounds like an older computer which was upgraded to windows 10. I went through similar trouble with an older computer. Just get a newer computer, it runs perfect on my newer WIndows 10 computer and on another WIndows 11 machine. The old machine had lower memory and outdated graphics that had no more...