A manufacturing method comprising: forming a part characterized in that the method includes: holding first and second powders in first and second powder hoppers respectively, the first powder having first particles of a first material and the second powder having second particles of a second material; directing the first powder and second powders from the first and second powder hoppers , respectively, through first and second nozzles , respectively, of a print head onto a substrate, wherein the print head has a lower surface and flow of the first and second powders is self-limiting with the lower surface of the print head near a surface of the substrate and the lower surface is flat to screed the first and second powders to form a flat level surface of the first and second powders ; moving the print head relative to the substrate to deposit the first and second powders and to form a first volume of the first powder in contact with a second volume of the second powder with an interface between the first and second volumes, the second particles being loose and holding first particles in proximity to one another, the flat lower surface of the print head maintaining the flat, level surface of the first and second powders when moving the print head relative to the substrate; employing a connection scheme to connect the particles to one another, wherein the first material is a positive material and the second material is a negative material so that the positive material preferentially connects the first particles to one another relative to the negative material connecting the second particles to one another, the positive material forming the part with an edge of the part defined by the interface while the second particles remain loose; and removing the part from the loose second particles. holding first and second powders in first and second powder hoppers respectively, the first powder having first particles of a first material and the second powder having second particles of a second material; directing the first powder and second powders from the first and second powder hoppers , respectively, through first and second nozzles , respectively, of a print head onto a substrate, wherein the print head has a lower surface and flow of the first and second powders is self-limiting with the lower surface of the print head near a surface of the substrate and the lower surface is flat to screed the first and second powders to form a flat level surface of the first and second powders ; moving the print head relative to the substrate to deposit the first and second powders and to form a first volume of the first powder in contact with a second volume of the second powder with an interface between the first and second volumes, the second particles being loose and holding first particles in proximity to one another, the flat lower surface of the print head maintaining the flat, level surface of the first and second powders when moving the print head relative to the substrate; employing a connection scheme to connect the particles to one another, wherein the first material is a positive material and the second material is a negative material so that the positive material preferentially connects the first particles to one another relative to the negative material connecting the second particles to one another, the positive material forming the part with an edge of the part defined by the interface while the second particles remain loose; and removing the part from the loose second particles. <EOS>