Welcome to the Onshape forum! Ask questions and join in the discussions about everything Onshape.

First time visiting? Here are some places to start:
  1. Looking for a certain topic? Check out the categories filter or use Search (upper right).
  2. Need support? Ask a question to our Community Support category.
  3. Please submit support tickets for bugs but you can request improvements in the Product Feedback category.
  4. Be respectful, on topic and if you see a problem, Flag it.

If you would like to contact our Community Manager personally, feel free to send a private message or an email.

Flip Arc?

calvin_selin
calvin_selin Member Posts: 11 EDU

Is there a way to flip an arc when you regenerate your part studio and the arc comes out backwards?

Best Answers

  • eric_pesty
    eric_pesty Member, pcbaevp Posts: 2,884 PRO
    Answer ✓

    To answer your question, no there is no "quick" way to fix that in a sketch.

    This is one of the reasons why (as a general rule, there are exceptions obviously…) it's better to leave sharp corners in sketches and use fillet features after the fact.

  • MDesign
    MDesign Member Posts: 1,462 PRO
    Answer ✓
    animate.gif

    Either mirror the entities and delete the old ones and reconstrain. or do this…

    which requires deleting 2 constraints and moving the center point of the arc.

Answers

  • STEG
    STEG Member, User Group Leader Posts: 141 PRO

    Would be a good idea to add an image to your question since the arc should not change. 🤔

  • calvin_selin
    calvin_selin Member Posts: 11 EDU

    for example, if I have an arc with a fixed diameter and is tangent to two lines, when I regenerate it, It will flip.

  • glen_dewsbury
    glen_dewsbury Member Posts: 1,374 PRO

    Would be useful to add a link to your document, That will someone to copy and interpret the issue or you.

  • calvin_selin
    calvin_selin Member Posts: 11 EDU

    for example, this convex arc looks like this.

    Screenshot 2025-05-28 11.13.42 AM.png

    When I Angle the are past 0 degrees, the arc goes all the way around, like this.

    Screenshot 2025-05-28 11.15.12 AM.png

    I was wondering if there was a tool (other than manually deleting constraints and re constraining them) to flip the arc to make it like this:

    Screenshot 2025-05-28 11.18.28 AM.png

    these all have the same constraints and dimensions, but are different.

  • eric_pesty
    eric_pesty Member, pcbaevp Posts: 2,884 PRO
    Answer ✓

    To answer your question, no there is no "quick" way to fix that in a sketch.

    This is one of the reasons why (as a general rule, there are exceptions obviously…) it's better to leave sharp corners in sketches and use fillet features after the fact.

  • MDesign
    MDesign Member Posts: 1,462 PRO
    Answer ✓
    animate.gif

    Either mirror the entities and delete the old ones and reconstrain. or do this…

    which requires deleting 2 constraints and moving the center point of the arc.