Quote Originally Posted by spaceman View Post
How do you get the metal ring out of the 3d printed model. Do you make a mold from the 3d printing and then pour into
that mold. Ive seen people mill on cnc cast but not on 3d printer.
She's printing the ring as a positive model, not a mold. (No, you can't pour hot metal into a plastic mold.) But using a version of the very old lost-wax process, she can pour a plaster-silica material all around the model, bake it in a kiln until the plastic vaporizes, and fill the resulting cavity with metal.