For those of you who are initiated in Blender and are interested in creating your own 3D printed jewelry Artur Tchoukanov a video tutorial on how to create a simple ring from a bitmap. Blender is a free open source 3D modeling and animation software, available for all major operating systems under the GNU General Public License. Download Blender and follow the tutorial to create your own ring.
If there is any other CAD software you would like to see tutorials on how to prepare for 3D printing, please let us know. In the meantime check out Cad Junkie and Lynda (Lynda for Blender) for more CAD tutorials.. Warning: Hours of your life may be lost following CAD tutorials, proceed with caution.