Method of 3D printing using color mixing nozzle with multiple distribution elements

A method for 3D printing a 3D item, the method comprising:

• depositing m 3D printable materials to provide the 3D item comprising 3D printed material, wherein m≥2,
• feeding the m 3D printable materials to at least m distribution elements of a printer head, and depositing the 3D printed material,
• wherein the printer head includes n distribution elements, wherein n≥2, a combination chamber, and a printer nozzle, wherein the combination chamber is configured downstream of the distribution elements and upstream of the printer nozzle, wherein each distribution element comprises a flow-through chamber with an inlet for a 3D printable material and a plurality of k outlets to the combination chamber, wherein k≥4, each distribution element being arranged to distribute the 3D printable material by the plurality of k outlets, wherein the outlets of the distribution elements are configured such that a plurality of outlets of a distribution element have outlets of another distribution element as nearest neighbors;
• and
• wherein the 3D printed material comprises plurality of domains originating from the m 3D printable materials, wherein the method comprises controlling the dimensions of the domains to have a largest width which is at maximum 120 μm.