Steam Locomotive Iron Duke

**Perfil de Impresión Estándar - BIQU B1**
- Thin Walls: Yes
- Skirt: 6 lines (1 layer high)
- Support Angle: 40°
- Support Density: 1
- Interface Height: 0.05mm
- Tree Support: Ø1.5mm branches / Ø2.5mm base
- Tree Top Rate: 1

The Iron Duke is a classic 4-2-2 express steam locomotive known for its large driving wheel, elegant Victorian design, and smooth high-speed performance. Built for fast passenger service, it became one of the Great Western Railway’s most iconic early express engines.