Description

That might be extreme situation of having liquids and rigid objects join together. Maybe if an object contain liquid inside it, like a close bottle of wine , and you want to make sure the liquids will not spill no matter what happens.

I thought more about muti properties devide in one object, like a hammer for example, with a wood handle, and steel head, which can be define in a sub object mode, or just by making them as a group, two separate objects in max group. This mean that the system will respect the fact that the two elements are joined together, but affected differently by the simulation. 

Thank you for your replay,

The spherical helper looks very useful, and I wonder about something for more common use, where an object is dealt with as a hole, with no concerns about center of gravity, elements colliding and go through each other. Just simple combining of multiple elements that will be simulated as one, of using sub object to give different elements/faces/vertices, a different attributes. If it is used as a sub object, a selection fall off, can be nice.