Hi Anis

> Another idea can be :
> after use sketch to build 3D object use a feature like extrude,
> revolve, etc "the source sketch" will automatically go to hide
> mode ( disappear )

I've thought about that some, but it would mean that you would have to do extra work to unhide those objects if you wanted to adjust the revolve for example by editing the source curve and seeing the surface update.

So that would add more steps and complicate that particular workflow.

The main problem is being able to select one or the other when you need an edge, I think that in the future when I get a chance to work on it, I may try to detect this situation of a coincident curve and edge and put up a small pop-up menu just for this case that has 2 choices on it for which one you want.

- Michael