Tried other methods of making casting masters. Most work but not consistently. Resin 3D printing is expensive and labor intensive. It also fails to burn out well in my experience. FDM 3D printing using wax filament is very primitive. OK for large commercial castings but not good for jewelry making. My best results are achieved through 2 and 3 axis CNC milling directly upon solid wax. The lead photo shows double sided 2D milling of 0.180 inch sheet hard wax. The mill bit used was 0.010 inch at the tip. Ten thousands of an inch! The movie below is the milling machine in use. That's a water cooled 25,000 rpm spindle running at 15.000 rpm. Carving time was about three hours. Faster th...