mechanical part 3d model

Create a precise 3D CAD model of a simple mechanical part consisting of a rectangular base plate and one vertical cylindrical post. Base plate: • Rectangular shape • Length: 120 mm • Width: 80 mm • Thickness: 8 mm • All edges straight and square • No holes, chamfers, fillets, grooves, or other features Cylindrical post: • Solid cylinder • Diameter: 25 mm • Height: 150 mm • The cylinder must be positioned exactly at the geometric center of the rectangular plate • The cylinder axis must be perfectly perpendicular (90 degrees) to the top surface of the plate • The cylinder starts directly from the top surface of the plate • No offset, tilt, taper, or curvature • The cylinder must be perfectly vertical and concentric with the center of the base plate The final object must be a single solid mechanical part combining the rectangular plate and the cylindrical post. Use exact millimeter dimensions and maintain precise engineering geometry. Do not add any additional features, details