Fusion
Please record a Screencast showing the behavior you are talking about. There may be something causing it that others may see.
John Hackney, Retired
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I see what you are concerned about but I do feel that something is lacking within your sketch that allows this behavior. If you would please attach this model so the Forum users can look into your sketch. If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section of a forum post to attach it.
John Hackney, Retired
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a couple of comments here:
- do you have any dimensions in your sketch that have negative values? Flipping like this happens when you use negative values (we block those in the dimension UI, but there are loopholes that let them happen). Try to avoid negative values in sketch dimensions
- While "it should be pretty clear from inference which orientation is the desired mathematical solution", that is easier for a human to perceive than it is to implement computationally. All the solver guarantees is that the constraints are met. Though I cannot tell from the video what constraints are actually in your sketch, my guess is that this does represent a valid solution to the geometric constraints, and as @jhackney1972 said, you will need other constraints or dimensions to disambiguate your intended valid solution from all the other valid solutions.
And, as @jhackney1972 said - it will be easier to diagnose with the actual design than from a video
Jeff Strater
Engineering Director