3D printers using independent dual extruders allow two different types of filament to be combined in a single print. This makes it possible to create objects from two different materials (for instance using soluble support with another advanced material) or to make multi-color prints. Several 3D printers on the market offer dual extrusion by placing two nozzles in a single print head. Since the inactive nozzle is always close to the part that is being printed, this technology comes with several drawbacks like oozing.
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