arcady, You can probably do this in carrara, but not very efficiently. Carrara really isn't a modeller nor is it promoted as such. Pro is much better, but still going to frustrate someone new.It has modelling tools which is more than most of these renderers can say, especially at this price. Particularly for sub-d. I wouldn't drive myself nutty over it. Go try hex or silo. These will work well w/ carrara. See which one you like more. Hex is more powerful, but silo has displacement which hex won't have till later. Hex should have a carrara bridge coming too which will make it even better for carrara. It already exports car files and works well in other ways.If you want to model don't drive yourself batty spend a few bucks extra and get a good modeller you like.You might want to even try truespace 5 which can be had pretty cheaply.I don't like the old interface (newest one seems much better), but for modelling it might not be bad. Lotta people like it's modelling tools.

No need to think outside the box....
    Just make it invisible.