Fractal Vase - yes another one
by cmetzel, published
The concept was inspired by http://www.thingiverse.com/thing:18672 but this was a recreation from scratch with increasing "diameter" on the way up. Don't know if that qualifies as a derivitive or not, let me know if it is and I'll link to the other thing.
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Generate your gcode with 0 infill, and modify the code to remove the top layers. Item is drawn solid so you can specify perimeters instead of trying to nail the wall thickness and infill settings in your slicer.