Spiral Lamp Shade (Vase mode)

Print with a layer height of 0.2 mm and a width of 0.4 to 0.8 mm (you can do this with a 0.4 mm nozzle). 
It will print better with Vase Mode enabled.

Use 6 bottom layers to enhance the durability of the socket.
Let the bed cool BEFORE attempting to remove the model to ensure the bottom stays intact.
If the bottom detaches, use hot glue to secure it in place.