bmw 520i sedan 3d model

BMW 520i sedan car, simplified 3D printable model, optimized for FDM printing, Bambu Lab A1 compatible, detachable parts design, separate body, wheels, windows, and chassis, solid windows (no interior), thickened walls and structures, minimum wall thickness 1.2mm, no overhangs above 45 degrees, clean topology, no tiny details, reinforced wheel rims, smooth surface, print-friendly geometry, no supports required, modular assembly design, realistic proportions but simplified features