My name is Jim and I own and operate JewelTech, a Rapid-Prototyping
and CNC Milling and Designing Service Bureau near Seattle, WA. If I
can be of any assistance let me know. I do work for jewelers all
over the country. I have a Sanders MM2 Rapid Prototyping Machine as
well as two CNC mills, one equipped with a 4th axis for milling rings
in all different configurations. You can contact me at 425-888-5144.