Alternative Shade for Herrenhuter Stern
I designed a Lampshade for Herrenhuter Sterne and made a hollow version of the STL, because VASE mode failed me.
But after fiddeling with settings, I now recommend the VASE mode version: https://www.thingiverse.com/thing:6958301 ,
I also included the openscad script with this one, so go ahead and find your favourite shape and post a make!