Hi GKDantas.

Thanks for this tip. Yes is works ... but only as a hard workaround. But if I have more than these some polygons like you can see - it would be a hard work to do it in this way.

I think the others are right to use another tool for modeling. Cuts and Loop-cuts and so on are most important if you will do (hard surface) modeling.

But thanks again for showing me that workaround.

cheers
wal