This 3D model represents a conceptual primary crusher designed as a scale, fully 3D-printable technical model for educational, demonstrative, and display purposes. The model features a modular, detachable design with integrated magnet housings that allow secure and repeatable assembly and disassembly of components, making it ideal for engineering education, technical presentations, and industrial exhibitions where internal structure and component interaction need to be clearly shown. The geometry is optimized for FDM printing and scaled fabrication, and the model is provided as a conceptual educational asset not associated with any commercial brand or real equipment.