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tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
July 5, 2025
Solved

Sketcher constraints not maintained when using relation to drive a sketch

  • July 5, 2025
  • 3 replies
  • 621 views

(view in My Videos)
Creo 7 (yes, I know it is unsupported).  This issue has had me waste a couple of hours already and I am stumped. Model enclosed for review.

 

I have a trivial sketch that is not correctly constrained when using a relation to control a sketch which is a parent of said constrained sketch.

 

First sketch serves as parent of sketch 2

tbraxton_0-1751745115140.png

 

Sketch 2 

tbraxton_1-1751745348954.png

 

Video showing that when driving sketch 1 using a relation to drive dimension d10 in sketch 1 the constraints in sketch 2 are not maintained correctly.

 

Anyone have any insight into why?

 

 

 

Best answer by tbraxton

I just opened a saved version of the model I posted for this thread in 7.0.12.0 and the erratic behavior does not present itself. It is likely something unique to the session I had open, and I have no idea how to reproduce it. One can clearly see in the posted video that the constraints were not maintained but it will likely remain a mystery.

3 replies

M
MartinHanak24-Ruby III
24-Ruby III
July 7, 2025

Hi,

I cannot reproduce the problem in Creo 7.0.11.0. Please watch uploaded video.

tbraxton
22-Sapphire II
tbraxton22-Sapphire IIAuthor
22-Sapphire II
July 7, 2025

@MartinHanak & @kdirth Thx for testing this. I am using 7.0.12.0 so unless it is build date specific, I am still at a loss to explain it. I will try to reproduce this error again in Creo 7. I did test it in Creo 9 and the problem did not present itself.

kdirth
21-Topaz I
kdirth21-Topaz I
21-Topaz I
July 7, 2025

I also have not been able to reproduce the issue with 7.0.11.0 or Creo+ 12.3.0.1-001.

There is always more to learn.
tbraxton
22-Sapphire II
tbraxton22-Sapphire IIAuthorAnswer
22-Sapphire II
July 7, 2025

I just opened a saved version of the model I posted for this thread in 7.0.12.0 and the erratic behavior does not present itself. It is likely something unique to the session I had open, and I have no idea how to reproduce it. One can clearly see in the posted video that the constraints were not maintained but it will likely remain a mystery.

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