Multicolored fused deposition modelling print

An apparatus for producing a single colored or a multicolored three dimensional article from a polymer filament, comprising:

• a first print head with which a support material is printed, and
• a second print head with which a build material is printed,
• wherein the build material is the polymer filament,
• wherein the second print head comprises a second nozzle comprising at least two regions, wherein the second nozzle has a downstream open end for printing the build material and forming a three dimensional article,
• wherein the second nozzle is configured such that the polymer filament is solid in an upper region of the second nozzle and molten in a lower region,
• wherein the second print head is connected to a supply source for at least one of an additive and a color ink, wherein the supply source includes a plurality of reservoir vessels, each equipped with a metering apparatus, and
• wherein the second print head further comprises a melter in the lower region of the second nozzle to melt the polymer filament and a mixing apparatus for mixing at least one of the melted polymer filament, the additive and the color ink, and
• wherein said second print head, said second nozzle is the single nozzle and the polymer filament is the single polymer filament, and the second print head comprises a plurality of micro-injection needles oriented to cut into the molten polymer filament.