Hi Brian, it's possible to mirror 2 halves and have the result only touch each other at one point and not at the other.

That's how you end up with a result like you had - here is an example, say I start with this curve:



Then if I mirror it, I get this result:




So notice there that those halves touch each other at one point, so they can be joined and will be glued there, making one large curve that will select as a single piece. But they are far enough apart at the other point that they will not be glued there and it will be an open curve.

That's the same situation that you had, but with the gap being smaller in size so less obvious.


> Takes the gloss off using MoI with these silly things.

Well, it's basically only doing exactly what you tell it in cases like this. It helps to be careful that pieces align properly before mirroring to avoid this kind of problem.

- Michael