I am an Italian professional 3D designers and work for more than 20 years in the jewelry industry. Over the past 10 years I have dedicated to CAD design 3D design software I use are: Matrix8 Gemvision and RhinoGold. All jewelry designed by me are feasible, as well as being 3D designer I am a goldsmith and setter of precious stones and so I know all the production processes, from design to completion. Also it makes service rendering with V-Ray Matrix8. I can provide any proper file for your 3D printer. I can also provide the file and already full of media for printing. Please see my profile where you can see a very small part of my plans.