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26 SMT Magazine • January 2015 4. Print a layer of insulation over the top of the exposed components leaving open the desired terminations, followed by printing of conductor traces. (Resistor materials could be printed into terminations also if desired to re- duce component count.) These last two steps, insulators and conduc- tor layer printing, are repeated as needed until 3D PrInTInG In ELECTrOnICS—a PErSPECTIvE continues Figure 1: conceptual system for producing electronic assemblies. The complete manufacturing system could occupy a relatively small footprint and be capable of producing assemblies in as little as a couple of hours. Feature