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mirror complex object in sketch "could not be solved" sea of red

In this parts studio: https://cad.onshape.com/documents/1b99203e7885279beaf6a634/w/7f30400ce2153da370630209/e/e646a461b511bbea60c71ac0
when I mirror the objects as indicated below, I see a sea of red and the message that the sketch could not be solved.
what am I doing wrong?
thanx r

Answers

  • russ_humphreyruss_humphrey Member Posts: 6 EDU
    And if I delete the object indicated, the red disappears, but the objects bear little resemblance to the initial one.
  • Alex_KempenAlex_Kempen Member Posts: 197 EDU
    Like Neil Cooke said in your other thread, you're putting way to much stuff into one sketch. In modern CAD software, sketches are solved concurrently, meaning a valid solution is computed for every single constraint and dimension in your part studio at once. This makes the modeling experience incredibly streamlined (as opposed to manually specifying the solve order of every constraint and dimension, an absolute nightmare), but can lead to instability in extremely large sketches such as yours. Prefer to extrude a single ellipse first, then use solid modeling tools such as curve pattern and feature mirror to make multiple instances of it as desired.
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