3D Model: Generate A Highly Detailed 3D Model Of A Mechanical Heart. Ensure The Model Is Completely Solid And Not Hollow—the Interior Should Be Filled With Plaster. The Exterior Should Resemble An Anatomical Heart But With A Robotic/industrial Design (metallic Surfaces, Bolts, Vents, Etc.). Prioritize Structural Integrity And Realistic Mechanical Functionality. Avoid Any Open Cavities Or Unintentional Gaps In The Geometry.