I have made a chain of toruses, when I apply rigid body physics to it, it breaks as soon as I play animation. I have tried scaling it up but does not help. Please help me fix it.
Blender file is : https://drive.google.com/file/d/0B5aZVQjlGn3uem44NVFoZ040SFk/view?usp=sharing Chain is in 2nd layer.