I created this model using a surface from Surface Evolver.

The added Sphere at the bottom is hollow.

On top and bottom of the Sphere there is a 10mm cut hole - so if you 3D print it with Stainless Steel the Steel powder can be poured out.

I recommend http://i.materialise.com - they have 3 shades of Stainless Steel to choose from! and http://ponoko.com

(I dont like Shapeways low quality post processing so i dont recommend them)

Size: 160x140x150mm
Wall thickness: 2~3mm

This design is licensed under the Attribution - Non-Commercial - Creative Commons license.

© 2012 by Dizingof