[Solved] *Part* mirror - *PartDesign* feature - *PartDesign* modify both PD bodies

[Bance]

You have created the square pocket before the base feature, so it becomes part of the base feature.

[M4x]

I thought I've tested that too but I assume you're right. I'll try it again tomorrow and report back.

[kisolre]

My dependency graph looks pretty much like yours.

Based on your original file DepGraph should look like this:
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PartDesign_Part-mirror_v1_kiss_depgraph.JPG (73.08 KiB) Viewed 556 times

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PartDesign_Part-mirror_v1_kiss.JPG (40.99 KiB) Viewed 556 times

[Bance]

As you saw it works. But it is not supposed to be used that way so it is not supported and could potentially be removed in any moment in the future.

I don't mean to argue, but what is the basis for this?

Steve.

[kisolre]

what is the basis for this?

The red arrow? The warning "Links go out of allowed scope"? Multiple mensions "you should not do that" in the forum? It is not forbidden by the program but is strongly discouraged. I dont think that it should not work. I really like that it does. But especially for beginners it could lead to all kinds of problems and misunderstandings. Like in the latest thread here https://forum.freecadweb.org/viewtopic.php?f=3&t=46564...

[Bance]

Sorry, I meant why are three bodies required? I explained myself how to keep the model in scope, and have managed it with only two bodies. So why is the third required?

[kisolre]

Sorry, I meant why are three bodies required?

Because you did not mention it and I did not notice with the short glance on your file - the modification of the Body002 TIP PartDesign_MoveTip
And later @M4x will ask why the modifications are not there in the exported STL since the BODY was selected as advised by many and the docs

[Bance]

You have created the square pocket before the base feature, so it becomes part of the base feature.

Sorry my mistake, although I don't remember doing it, I have set the tip in body_1 to pocket.

The tip is the part of the body exposed to the outside, so mirror see's only the tip not the square pocket.

That's why it works in my file and not yours. I would say this is one of those times where it works but is not recommended.

As Kisolre rightly points out it will lead to confusion later if you need to export or use other work benches to modify the model.

Rather you should create the model in steps as each body will then be more robust. See Kislore's post above.

Steve.

[M4x]

I was able to reproduce both solutions / workflows. To avoid possible misunderstandings / problems along the way, I'll follow kisolres "three-bodies-approach".

Thank you very much!