Picture of Unbalanced Vase
This unbalanced vase (weight inserted in the base) is a 3d print of a freeform drawing.

The 3d printing and design files are available at:


Step 1:

Picture of
I drew a 100mm by 125mm box on a sheet of paper (within the buildable limits of my MakerBot Replicator) and drew a vase. I marked dots at points that would sort of define the curves.  I measured the x,y coordinates of each dot (lower left corner is 0,0--upper right is 100,125).