Corneel Cannaerts and I are doing a talk and workshop at Processing Bordeaux later this month. We'll take a look at how you can use Processing to generate 3D models for digital fabrication. In our talk, we'll show some of the work we did over the past two years, similar to the talk we did at the Newline conference at the Hackerspace in Ghent in 2012. In the workshop, we'll cover the Hemesh library and toxiclibs to generate meshes, and we'll take a look at some tools like Meshlab and Netfabb to fix meshes before sending them to a 3D printer. See you in Bordeaux!
More info: Processing Bordeaux.