Mainline Railworks HOn3 Structure Base with Integrated Track

The Mainline Railworks HOn3 Structure Base provides a convenient foundation for creating realistic narrow gauge railroad structures and trackside industries. Featuring an integrated track section running down the center of the base, this component makes it easier to incorporate track-served buildings and industrial facilities into your HOn3 layout.

The standard base measures 6 inches wide by 9 inches long, providing space to plan and build a variety of narrow gauge structures around the integrated track. Whether you're modeling a freight depot, industrial loading facility, engine shed, or another trackside structure, this base offers a starting point for creating a functional and visually cohesive scene.

Custom sizes are available upon request, allowing you to tailor the base to your specific structure, track plan, and layout requirements.

🚂 Why This Matters

Building structures around track can involve considerable measuring, fitting, and alignment to ensure everything works together. An integrated track base simplifies that process by providing a dedicated foundation with track already incorporated into the design.

Instead of starting from scratch, you can focus on designing the surrounding structure, adding details, and bringing your narrow gauge railroad to life.

🏔 Perfect For

• HOn3 freight depots and freight houses

• Trackside industries and loading facilities

• Narrow gauge engine sheds and service buildings

• Mining and logging structures

• Small industrial buildings served by rail

• Custom structure and layout projects

📐 Standard Size

• Width: 6 inches

• Length: 9 inches

• Track: Integrated track running down the center

• Custom sizing: Other dimensions available upon request

🔧 Key Features

• Designed specifically for HOn3 modeling

• Integrated center track simplifies structure planning

• Provides a defined foundation for trackside buildings

• Standard 6" × 9" footprint

• Adaptable to a variety of industrial and railroad applications

• Custom dimensions available for specialized projects

⚙️ Compatibility

• Designed for HOn3 layout applications

• Intended for use with compatible HOn3 equipment and track arrangements

• Suitable for incorporating track-served structures into new or existing layouts

➕ Build Your Scene

Pair the structure base with appropriate buildings, industrial details, loading facilities, and other trackside features to create a believable narrow gauge railroad scene. Use it as the foundation for a standalone industry or incorporate it into a larger yard, mining operation, or logging complex.

🛠 Custom Size Options

Have a particular building or industry in mind? Custom base dimensions may be available upon request. Contact Mainline Railworks with your desired measurements and project requirements to discuss options for your layout.

⚠️ Builder Tip

Plan the dimensions of your building and the clearance required around the track before choosing your base size. For larger structures or specialized applications, ask about custom dimensions before beginning construction.

This 3d printed kit includes the following parts:

• 1x MR-H3SB69.P1 (PLA (Grey), 152.4 × 5.8 × 228.6 mm)
• 1x MR-H3SB69.P2 (PLA Wood (Black Walnut), 23.2 × 0.7 × 228.6 mm)
• 1x MR-H3SB69.P3 (PLA (Black), 14.7 × 0.8 × 215.4 mm)
• 18x Code 80 rail per inch (Atlas Rail)