Steam Locomotive Big Boy

**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 Big Boy is a massive 4-8-8-4 articulated steam locomotive built for the Union Pacific Railroad. Designed for hauling extremely heavy freight over steep mountain grades, it is one of the largest and most powerful steam locomotives ever constructed.