A 3D-printable Art Deco upholstered armchair designed for HO (1:87) dioramas and model-railway interiors. Features a boxed frame with geometric openwork, sled-style base and sculpted seat and back cushions to evoke 1920s–1930s period styling. Ideal for parlors, lobbies, vintage train cars and vignette scenes. Files are provided sized for HO/1:87 and optimized for fine-detail printing on resin and FDM printers. For best results print at 0.05–0.10 mm layer height; light supports may be recommended under the base and any deep cutouts. Clean and finish as desired, then paint or flock to match your layout or display.