Spiral Vase mode start level

[Cecchellone]

Hello I was suggesting a way to slice the lower part of an object in "normal" mode, and the top part in "spiral vase" mode. It could be very usefull if the interface could specify a "start height" for the Vase Mode, so it will normally slice the bottom part, and a certain level it will start with the spiral vase mode. Obviously if needed it also needs to make a shell not to leave the infill below visible.