Since switching over to Inventor 2012 I have been having trouble snapping to tangent points on a curve or circle to pull dimensions. I would do it manually but if the dimension is not referencing a specific point in the model it turns pink to identify an error.
Is there a setting that may be not allowing me to snap to tangent points?
Are you not able to select the circle or arc at all?
I ask because I noticed that if you select the arcor circle at the tangent point and select the other or hover over the point it will switch to tangent.
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