1. The document discusses 3D printing and was submitted by Laksika Suntud, Siriprapakorn Sanworanart, Ramita Chalearmchutidath, and Chanya Charonesuppayanan.
2. 3D printing, also known as additive manufacturing, is a process for making 3D objects by laying down successive layers of material based on a digital file.
3. The inventor of 3D printing is Chuck Hull, who invented stereolithography and holds over 60 patents related to 3D printing and rapid prototyping.