A reduced density article of manufacture, and process for making same, made from a thermoplastic polycarbonate composition. The reduced density article of manufacture has (1) a certain density and (2) a certain micro structure containing from 1% to 20% by volume of voids wherein at least 80% of the voids are high aspect voids and less than 20% of the voids are spherical voids with a diameter of 10 to 100 microns. The polycarbonate thermoplastic composition comprises at least 50 mole % of a certain bisphenol A. The reduced density article of manufacture is made by a monofilament additive manufacturing technique.