The 3D printing research association, a group of 3D printing experts in Korea, attended Formnext 2018, the world's top 3 additive manufacturing exhibition held in Frankfurt Messe, Germany from November 13th to 16th, together with 33 Korean industry-academia researchers. In this formnext, the observers realized that they had already entered the era of additive manufacturing while witnessing more players along with the expansion and refinement of the additive manufacturing and the diversification of materials that advanced companies are pursuing.