Splitting a sketch into two sketches

[TavernSenses]

[*] I have a sketch of which I want a certain part to become a separate sketch. So I basically want to split the sketch into two separate sketches.
[*] Also, afterward the elements of each of the sketches should be able to constrain on the elements of the other sketch, as if they still were in the same sketch.

How can this be done?

[meme2704]

Hi
You make a copy (not a clone!), You open a new sketch, you paste the copy, and you remove what is too much
you re-open the first sketch, and erase what is now in the 2em, the 2 will be perfectly complementary

[GeneFC]

If you still want to constrain to the "missing" elements from the "other" sketch then a better choice would be to convert the unwanted elements to construction geometry (blue) rather than erasing them.

Gene

[meme2704]

construction geometry (blue) rather than erasing them.

Yes it's a better solution, but , befor copy the 1st sketch , if you clone, you can't modify ithe clone

[TavernSenses]

If you still want to constrain to the "missing" elements from the "other" sketch then a better choice would be to convert the unwanted elements to construction geometry (blue) rather than erasing them.

Gene

Thx, Gene. Do you mean that if I change non-construction geometry in one sketch, the construction geometry "equivalent" in the other sketch will change accordingly, as if constraint by "=" ?

[chrisb]

You can reference elements from one sketch in another
- using external geometry references
- using Expressions.

Please note the the dependency must be hierarchical, i.e. the dependencies work only in one directions. Cyclic dependencies are reported by FreeCAD as errors.

Perhaps you can create a master sketch, on which both sketches depend.

[GeneFC]

Do you mean that if I change non-construction geometry in one sketch, the construction geometry "equivalent" in the other sketch will change accordingly, as if constraint by "=" ?

No, the sketches would be totally independent. I did not interpret your point #2 to mean that you wanted to later change either sketch. If that is what you want then one of the other responses in this topic would be the correct approach.

Gene

[meme2704]

So, with the idea of GeneFC, my solution is realistic

[chrisb]

I think it's time to move from the abstract level to your concrete project. I often see here questions to some modeling details which may be omitted completely by a different modeling approach.

So you can tell us more about your task and possibly provide a file.