Wobbly Ghosts are a one piece print with an internal spring. After the designed in support (necessary to stop the spring 'springing' during printing) has been removed they sit slightly above the surface they are sitting on and... wobble.
There are two types of Wobbly Ghost. One has arms and the other doesn't. They both work in the same way. The print with arms just takes longer to print and uses a bit more filament. They look great printed with white, translucent and glow in the dark filament
Print with 3 shells and 75% infill to ensure the spring is strong... but it won't use a lot of filament as the design leaves most of the Wobbly Ghost hollow.
Great fun for Halloween or any time...
PLEASE READ THE INSTRUCTIONS AND LOOK AT THE IMAGES BEFORE PRINTING
Note: If you like this check out all my other designs... including my 'Skeletonz' with moving arms/legs and bones that rattle. Visit http://www.thingiverse.com/thing:1069207
And, please post images of your prints for others to appreciate!