Angle constraint changes on different computer

[Smyth_eric]

I have a model that when someone else downloads it from vault to a different computer, angle constraints wants to rotate or flip 180 deg. This happened with numerous models. This is happening with one computer out of 4. Has anyone seen this phenomenon?

[James_Willo]

Hi Eric, I'm going to assume that your colleagues have used solution 1 in the constraint panel. There is no direction applied so Inventor will sometimes solve the constraint in a different way. 

I would also advise using option 3, just be aware that the 3rd selection should be the axis of your rotation and not a face or it won't work. 

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

[blandb]

I wouldn't think that would change the angle when a file is opened. I get it for different construction results, but just opening?

[James_Willo]

I think it depends if the model is refreshed and it is forced to recalculate the constraints. 

Constraints don't necessarily solve in the same order every time, they are not always solved top to bottom in browser order. I think this is why not tying down your angle can lead to flipping. It's a while since I looked at all this so I could be wrong, but always using explicit should stop the flipping.