Hi Michael,

> For your steps the only other possibility that I can think of at the moment is
> if your main object is a solid you could try selecting everything and running
> the Boolean Merge command rather than retrimming it, that might be more convenient.

Thank you very much for your suggestion.
I tried this method and it works fine and it's also a little bit faster then retrimming.
As said by you, this method works only on solids.
In case of manipulating polysurfaces i am forced to use the retrimming.

A little more question regarding solids.

I noticed that creating a simple 3d box object, it's possible to enable solid point editing directly on the object created.
But, if i'm not mistaken, it seems the only solid primitive that has this feature.

My question is : when a solid object can be directly modified using solid control point editing ?
That is, what is needed by an object to be able to be manipulated with solid control point editing ?

Thank your for your help and have a nice day.

Marco (mkdm).