Recently, various attempts have been made to apply the additive manufacturing technology directly to fabricate a product. In this regards, the industry is focusing on the multi-material additive manufacturing technology that can processes multiple materials simultaneously. This study is about the fabrication of a 3-dimensional circuit device (3DCD), based on the multimaterial additive manufacturing technology, which is combination of the material extrusion and the direct writing processes. The multi-material additive manufacturing system was developed based on the commercial multi-head FDM system. In addition, a contact type nozzle for the dispensing of the conductive material in the direct writing process is proposed. The 3-dimensional circuit device in which circuit elements are arranged on several layers was fabricated successfully, based on the presented multi-material additive manufacturing system.
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