The growth of immersive technologies such as Virtual Reality has opened new possibilities for educational subjects, particularly focused on experimental learning. This evolution has enabled the development of new strategies and methodologies especially in complex topics that were previously hard to achieve. In alignment with the theoretical educational approaches, this paper presents the development of an application in Virtual Reality focused on the educational practice of 3D printing, specifically in the visualization of G-code generation. The proposed approach follows a structured framework followed by methodical steps. The application was developed in Unity™ and a preliminary evaluation was conducted with 10 participants, providing evidence of positive feedback regarding the effectiveness of the application.