Or if you've got $50K to spare, checkout the Dimatix material deposition printers. I spent 2 years on one in a printed electronic lab at Stanford. You'll need access to a chem lab to get research-grade printable & conductive polymers :)
In 1963 Australians Bolto, DE Weiss, and coworkers reported iodine-doped oxidized polypyrrole blacks with resistivities as low as 1 ohm·cm. This Australian group eventually claimed to reach resistivities as low as 0.03 ohm·cm with other conductive organic polymers. This resistivity is roughly equivalent to present-day efforts.