Within this paper, a corrugated horn antenna in the sub-terahertz regime is manufactured using a novel printing technique and the results are presented. The antenna aperture utilizes an elliptical shape which leads to symmetric radiation. Furthermore, the implemented antenna design leads to low side lobes, also the overall length and weight is comparably small. In addition to the antenna characteristics, the surface of the printed antenna is examined to investigate the roughness and accuracy. A symmetric radiation pattern as well as low losses are reached, which indicates a smooth surface and high accuracy.