geometric frame 3d model

A high-fidelity, precise CAD-style model rendering of the square-based pyramid framework structure seen in image_0.png, but completely stripped of all surface textures and material properties. The perspective is a clean, three-quarter high-angle view, perfectly centered, showing the full square base frame and three of the rising triangular frames with their central void. The entire structure is composed of uniform, crisp-edged, solid rectangular-profile geometric bars. The surfaces of these bars are perfectly smooth, clean, and flawless, without any metallic texture, grain, or specific material identity. The color is a neutral, uniform geometric gray. The focus is entirely on the model's structure, precise geometry, and crisp edges. The corners are sharp and flawless, and the frame thickness is consistent throughout. The visualization is like a pure, untextured solid mesh model. No base plane or object shadows, just the pure form. The background is a clean, featureless, pure white void