A very kind person, I got lot of help from him.
Thank you and hope you always well, @wandererfan.

@wesbrooks
I have reported this "missed click from multi select" issue earlier this year.
It's same headache for me.

gdurrens wrote: ↑

Mon Jun 29, 2020 1:42 pm

...

My test shows Heidi's method has a limitation. The horizontal angle must be within a range of 31-95 degree.

And I also suspect unknown defect in your model, for example,

working with bones and implants the question appears: how to get a surface (FreeCAD understands) from a stl-file. It seems your intent is to convert faceted mesh into curved surface (NURBS). Right? But this is not design intent of "Mesh to surface". "Mesh to surface" is design to handle very simple...

freecad-heini-1 wrote: ↑

Mon Jun 29, 2020 12:13 pm

https://forum.freecadweb.org/viewtopic. ... 42#p412442

I simplified OP's model,even removed a tiny edge (about 80um long.)
So, this time the sample file is quite simple, only a 4-faces shell.
Could you give another try? Or help diagonize.
Fillet radius 1mm.

freecad-heini-1 wrote: ↑

Mon Jun 29, 2020 12:03 pm

First edge for fillet, the angled wall.
...

So simple just impossible. Thank you.
In order to avoid hijacking thread. Please try my new sample file at page.

https://forum.freecadweb.org/viewtopic. ... 71#p412471

Anybody interested are welcome.

the problem in exemple 1 is : you have 1/2extrnal filet + 1/2internal filet you can do it in two operations That's wonderful technique! I also meet a challenge. Would you like to give a try? The intent is commercial style fillet at asymetric joint angle. https://forum.freecadweb.org/download/file.p...

uwestoehr wrote: ↑

Sun Jun 28, 2020 10:31 pm

As side effect, while playing a bit with fillets, drafts and the like, it annoyed me that FC sometimes freezes for a while because of unnecessary recomputes. Therefore I made this PR:
https://github.com/FreeCAD/FreeCAD/pull/3664

Quite same feeling, thank you.

Though "co-planar" is named by plane. It actually includes various cases, co-plane, co-tangent-face, co-edge, co-tangent-edge, co-vertex. To be specific, your case is a "co-tangent-face" issue, 2 helix grooves intersect at tangent faces. In some cases, co-planar Boolean break model at one, such as y...

Summary: Customized accel key of command "Duplicate selection" will be neglected in Part Design workbench. Reproduce: 1. New installed FreeCAD, start. 2. Check accel key of menu >Edit >Duplicate selected object, accel key is empty for now. 3. menu >Tools >Customize >Keyboard >Edit >Duplicate selecti...