I have got artifacts. I saved the project and reload the project with the current version of FreeCAD and the previous also. But after reloading the project the artifact just disappeared. And I have not been able to reproduce.

Regards
Pascal Garcia

Today I have had some artifacts a bit the same as you add. The very strange thing is that when passing the mouse on an artifact, many were have been highlighted as is they were a the same face. But they were not, some were not even on the same plane. Mark to recompute and recompute was not changing ...

Hello, Sorry for the delay. It took some time to digest everything. And apologize as I was really upset even if thee is a part of truth in what I was complaining about. Sorry I mixed words. I was thinking about solidworks and not solidcad. The point is that I have been able quickly to reach a state ...

Hello, I do not know everything about FreeCAD as it is quite wide. And I do not know anything about A2Plus. And may be have I given unnecessary information, and as I did not work on that for few month now my memory may not be sufficient. I am only talking FreeCAD and the way the different parts are ...

Misunderstood your remark about F5. ^R on mac!

Obviously there are conflicts to be solved.
I will do that later.
Regards

F5 is already present. It recomputes every thing that is marked to recompute. I added the Ctrl-F5 that marks to recompute and launch recompute. What can be done in 2 steps before can be done in one step. That is it. Shall I remove the Ctrl-F5? But that was not the purpose. This example was only here...

As soon as you will incorporate your part in a composed part (compound, fusion, cut, etc) but also make a pocket, ... you will fall in a trap with colors that cannot be solved without changing things in the architecture of the software: First to handle the colors the same way when creating the part,...

The concept of FreeCAD is very good, there is no point about that. See simply the OpenSCAD script. It is very simple somehow, fusions, cuts and intersections of a certain number of primitives: - Torus - cubes - spheres - cylinders FreeCAD should be able to do that in an even simpler way, but is not ...

Here is the OpenSCAD script. Capture700.JPG I made duplicates, the manifold is not valid. It is not practical, the software is slow.There is still some job to be done. But it is almost there in a couple of hours. There are many tangent faces etc. eps=0.01; length = 50.5; ray1 = 5.0; ray2= 0.5; rayou...