This is another one of those spiral vases you see around on thingiverse, however what makes this different to all of the others is that this was modelled, not scripted. When printing this vase actually has 2 walls, the exterior wall and then an interior forming the inside of the vase where your stuff goes, thus making it reasonably watertight.
The inside diameter also varies in width in accordance to the outside, basically if the outside gets wider so will the inside and if the outside gets narrower so will the inside.
One last thing about this model, since I exported directly from blender, it has a stupid scale. So once you import the model into Cura (which takes a while, I like lots of polys) you need to scale it up a lot, good thing about this, just rotate it so the bottom is facing down and the scale to any height you want.
If you guys feel generous then why not have a look at what I offer on shapeways, who doesn't want a mixer made for a drill ?
this is suitable to be printed using "vase mode" in s3d or "spiralize outer contour", you choose what to do, personally i don't care.