With polygon modelling this is usually not possible… the polygon has to be “drawn” in one “stroke” … no “pen-lifting”…
With 2D curves you can make holes… by just adding another curve (but not in 3D)…
With polygon modelling this is usually not possible… the polygon has to be “drawn” in one “stroke” … no “pen-lifting”…
With 2D curves you can make holes… by just adding another curve (but not in 3D)…