Project Hot Metal is an educational project aiming to teach engineering students how to operate a metal Additive Manufacturing (AM) machine. With cross-platform of PC and VR, the goal of the project is to simulate the operation of metal AM machine and provide instructional support for engineering students.  Students will not only have detailed instructions and assessments on the PC platform but also have a practical experience operating the machine in the virtual world. Project Hot Metal will also integrate the prototype with a machine-based tutor created with CTAT (the Cognitive Tutor Authoring Tools), developed by the Human-Computer Interaction Institute (HCII) at Carnegie Mellon University.