In this project, we build a professional 3D FEA Beam Analyzer in Python that simulates realistic cantilever beam deformation using actual engineering equations similar to ANSYS. The application includes I Beam, H Beam, and C Channel sections, material selection for different grades of steel and aluminium, stress-based color visualization, maximum deflection and stress calculations, dynamic 3D mesh deformation, and an AutoCAD-style viewport using PyQt5, OpenGL, and NumPy.