<< When i was using sketchup i could do this i a second, but in moi seems a bit more complicated
Seems inside Sketchup you must use also some specific plugins! ;)

Hello Glenn,

didn't test it, but one of Maxs scripts can help here http://moi3d.com/forum/index.php?webtag=MOI&msg=6674.267. It should do the same what Marco described.

Have a nice day
Karsten

Thank you Marco!
I hadn't thought of that approuch!

Yes Pilou, you are correct!
But is works great! :)

Thank you Karsten.
I will check it out!

Hi Glenn Claes,

...you're welcome.

One last suggestion...

In the event that some or all surfaces of your model are trimmed, then maybe there's one additional step
to follow in order to better achieve the wanted result :

(link to my previous post http://moi3d.com/forum/index.php?webtag=MOI&msg=7982.2)

1) Select your part
2) Unjoin all its surfaces

2B) Execute the "ShrinkTrimmedSrf" command on all the selected surfaces
2C) select again all the surfaces

3) ...
4) ...

Nice day,

Marco (mkdm).