Thanks for your precious help. i will try it for a while. it is fair to give you a truce...

keep your good work. Respect

Thanks for your reply Vitaly, it helps.

If you don't mind i have a couple of questions more 

1) It is possible to manage diferent layers assigning deferents materials and behaviors to it? Like in koru, as seen in this file ...

2) Koru vs. Boxshot › what are the main diferences and advantages of each of them. We are having some difficulties to understand when use one or another.

Thanks  a lot for your help.

Sure Vitally

here they are ...

thanks for you help.

Please check this ...

Its a custom imported object.

Thanks for your help.