Displacement Lamp with 1mm minimum thickness.
Best printed in "Vase" mode.
181mm height, standard E27 bulb holder. About 7 hours printer time at 0.24mm (0.4mm nozzle).
>> Warning!<< 2.424.000 polygons, about 118 megabytes stl file. Pretty fast to slice with Simplify3D, about 10-15 secs. with 12 threads Cpu (3930k)