Here’s a HingeConstraint with limits set from 90 to -90.
No matter how you put the 90 and -90, it always wants to go towards the SecondaryAxis. It would be nice if this were changed so that having the LowerAngle set higher than the UpperAngle would make the rotation limit go around the other way, like so:
LowerAngle set to 90 and UpperAngle set to -90
The thing I’m trying to do isn’t at exactly 90 degrees like in the example, so just the binormal axis isn’t going to solve a lot.