Apparatus and methods for additive manufacturing at ambient temperature

This invention describes a method for 3D printing objects by melting plastic pellets and pushing the molten material through a nozzle. Instead of building layers horizontally, this system deposits the melted plastic as beads onto a worktable that stands upright, allowing the object to be built vertically. A pump ensures a steady flow of material from the melting chamber to the printing nozzle, creating vertically-deposited beads of a specific minimum diameter.