I have zero 3D modeling skills and this is a very, very basic question - please bear with me.
I have a 2D drawing (I made it in Omnigraffle so I can export all sorts of formats - SVG seems most helpful, but I am naive).
What I want to do is to spin the drawing around a center line to make a 3D "top hat" like object. The result is to be given to Shapeways.
This seems super, super basic, but I lack the vocabulary to even formulate a reasonable google search to learn how this can be done.