Abstract: A printer that forms a three-dimensional object includes a single arm with all 3 axes on the head to move spatially while a substrate underneath the head remains fixed. Improved design and components enhance 3D movement, access to components, performance, durability, and ease of service.

Abstract: A printer that forms a three-dimensional object includes a single arm with all 3 axes on the head to move spatially while a substrate underneath the head remains fixed. Improved design and components enhance 3D movement, access to components, performance, durability, and ease of service.

Abstract: A method for manufacturing finger rings, bracelets, earrings, body jewelry and the like which have at least one curved surface, and which are inlaid with a precious metal or which have which have been subjected to deposition thereon of a metal compound via chemical vapor deposition. Ring blanks are placed in a spinning fixture and subjected to abrasion against at least one curved abrasive surface. For comfort rings, the inner surface is formed as a continuous curve. For rings having inlaid malleable precious metal, the precious metal is inserted in either a straight-wall or undercut wall. Ring blanks having straight-wall grooves can be formed using conventional casting processes. The precious metal is inlaid in the groove by one of several processes, which may include hammering, rolling, or pressing.