This script uses the built-in capabilities of MassFX in Max 2012 to creates very quickly convex hulls, spheres, boxes or capsules around the selected objects.

Script
By LittleLordPotala · 2012-02-16
This script uses the built-in capabilities of MassFX in Max 2012 to creates very quickly convex hulls, spheres, boxes or capsules around the selected objects.

Execute the script.
Select your objects.
Modify the parameters and click "Convert to custom mesh".