METHOD AND APPARATUS FOR THREE DIMENSIONAL PRINTING

摘要

A three dimensional printer extruder, comprising: a heating member comprising two or more heating member tunnels, each tunnel adapted for receiving a filament; and a nozzle comprising: a single extrusion aperture for extruding material; and two or more nozzle tunnels each connecting to one of the two or more heating member tunnels, and each having an output end at most 1.5 mm from the single extrusion aperture, wherein each filament is melted in a separate space comprising a heating member tunnel and a corresponding nozzle tunnel.