Next version of lampshade from me.
Inspired by lily on the valley flower.
Lampshade consist of two parts: main body and separate washer. This allow to make good fixation without broking of fragile body.
Update 18 February 2016:
Old washer file has been deleted.
Two new files have been uploaded for E14 and E27 lampholders.
You can print two copies of required size and fix lampshade between them.
Shell - 0.4 mm ! (single)
Bottom layer - 0.0 mm
Spiral mode (vase)
In Cura in Expert Settings select "Keep open faces".
Shell - 0.8 mm (two)
Bottom layer - 1.0 mm
Those bridges are side effect of spiral mode. They should be removed by appropriate tolls. I used nippers and rotary tool like Dremel. Be careful as shell is only 0.4 mm.
The same operation with washers will be required.