topic Re: mirror part in assembly not correct in 3D Part & Assembly Design

mirror part in assembly not correct

VK_14390994 — Fri, 07 Nov 2025 03:48:34 GMT

I am using Creo Parametric Release 11.0 and Datecode11.0.4.0

Can not mirror part along the plane properly in assembly if selected "Reuse existing model". Works ok if selected "Create a new model". Just toggling that option creates parts in two different locations

Re: mirror part in assembly not correct

vnamboodheri — Fri, 14 Nov 2025 05:06:32 GMT

Hello @VK_14390994,

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Your question has not received a response so far.
In order to receive meaningful responses from other community members, could you please provide more details and context regarding your inquiry? Specifically:

Can you describe the exact steps you followed before the issue occurred?
What options did you select under Component Placement?
Did you check if Assembly Constraints were applied correctly after mirroring?
Is this behavior consistent across other assemblies or only this one?
Can you share a screenshot of the assembly before and after mirroring?

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Re: mirror part in assembly not correct

Srinivasan-Iyer — Fri, 14 Nov 2025 06:48:22 GMT

As my understanding goes for the question,

"Reuse the Model" will not Mirror the Part. A Mirror Part is different from the Original Part and shall have a different part number. Hence, the behaviour is as expected.

Re: mirror part in assembly not correct

VK_14390994 — Mon, 17 Nov 2025 06:48:45 GMT

I'll try to explain this again: I need to mirror a part in assembly along a mirror plane with the same part number (create a copy or copy geometry). I can't have a different name for this part.

When I use the "mirror component" feature I select the part (green arrow, so far so good) then I select my mirror plane (also as expected). The default option is to create a new model and when I select to preview everything is as expected - mirrored part pointed by red arrow previewed.

Now, I can't enter the same name of the new model as my part, so naturally I select "reuse selected model" at which point the software flings my mirrored part somewhere far away. So the question is how am I supposed to mirror the same part about a plane?

reuse existing model

To add to that: if I select "create a new model" and "perform symmetry analysis" the part is recognised as symmetrical and is placed with the same name but the location is completely off again.

model reused with wrong location

Secondary question: what does mirroring a part using existing model actually do? Because it definitely doesn't look like mirroring. It's not intuitive at all.

Thanks

Re: mirror part in assembly not correct

tbraxton — Mon, 17 Nov 2025 17:42:40 GMT

Your latest post explains the situation in enough detail to now understand what the issue is. I suspect that the issue is that the component you are mirroring is not symmetric.

Test this combination of Mirror Component options and report back what happens. Using these options should reuse the part if it is symmetric in this context, if not it will create a new part. By using symmetry analysis Creo should determine if the part can be reused for this operation.

Re: mirror part in assembly not correct

VK_14390994 — Tue, 18 Nov 2025 04:18:39 GMT

Thanks for the suggestion. Unfortunately, I tried this and as you can see in my last screenshot in the post above Creo recognises my part as symmetrical but still decides to mirror it incorrectly.

Re: mirror part in assembly not correct

tbraxton — Tue, 18 Nov 2025 04:25:16 GMT

In the screenshot, you are referencing behind the message noting the part is recognized as symmetric there’s a flag with two warnings. Are those warning messages generated while you’re creating this mirror feature? If you open the warnings, what is the information provided about what is wrong? Open the notification center to gain access to the details about the warnings.

Re: mirror part in assembly not correct

VK_14390994 — Tue, 18 Nov 2025 09:34:11 GMT

No, not related to mirror feature - they were server update warnings.

I also tried mirroring another, asymmetric part, and the part mirrors correctly with a new name.

However if I want to reuse the existing model there seems to be an additional mirror in another plane that belongs to this said part.

green part on the left mirrored with existing modelmirrored part manually rotated 180deg on green axis

So if I'm talking about the part scg-01121, in the first screenshot the part with reused model is mirrored not as expected.

In the second screenshot I manually rotate the part along its Y axis which then aligns it as expected. This of course would not be a common case as I wouldn't use mirror feature for an asymmetric part/assembly.

Basically it's even more confusing

Re: mirror part in assembly not correct

Srinivasan-Iyer — Tue, 18 Nov 2025 10:05:14 GMT

Are you using AFX? Advanced Framework Extension?

Re: mirror part in assembly not correct

VK_14390994 — Thu, 20 Nov 2025 02:41:14 GMT

I don't know

Re: mirror part in assembly not correct

Srinivasan-Iyer — Thu, 20 Nov 2025 03:41:32 GMT

The reason for asking this question is because I see structural elements in your design. AFX is available in the base module, and one can see a tab (Framework) in the assembly Mode. The approach to using the module is slightly different from the regular assembly. One approaches the design from a Top-Down Design.

If you do not see the tab, open your Config.pro set AFX_Enabled --> Yes. Save and Restart Creo to load the saved Config.pro.

Some tutorial Videos...

https://www.youtube.com/watch?v=XuTTShG5Yqs

https://youtu.be/VU4mhMHGz8o

Re: mirror part in assembly not correct

pausob — Fri, 21 Nov 2025 22:10:05 GMT

Maybe post your model?

For me (Creo 10.0.5.0), this mirroring - by reusing a symmetric part - works as expected:

Re: mirror part in assembly not correct

VK_14390994 — Wed, 10 Dec 2025 02:43:37 GMT

I have the Framework tab

Re: mirror part in assembly not correct

VK_14390994 — Wed, 10 Dec 2025 03:37:03 GMT