Problem with mirrored object

[lecobain88]

Hello,

I´ve created a basic game for demonstrate of the features of Unity 3D with 3DS Max.

Everything worked fine, but the last step who was to add a tank, the top side which a mirror copy was made is imported with problems within the Unity 3D.

I would like your help to solve this problem, because I need to present this project to my college next week.

Thank you!

The tank should be like this:

 

But have this error in Unity 3D:

[Steve_Curley]

How did you mirror it? Mirror tool? Mirror modifier? Symmetry modifier?
Of the 3 the safest is Symmetry - the mirror tool the worst because it mirrors by using negative scaling, which is known to cause issues.

[lecobain88]

I´ve used the mirror tool and then copy 🙂

[Steve_Curley]

Don't. Go back to before you did any mirroring (or delete the "bad" half of your model), apply a Symmetry Modifier. It's far more reliable and shouldn't cause any errors/problems.