How to Build Model Railroad Mountain Scenery Model Train Books

How to Build Model Railroad Mountain Scenery

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This post will take you through a step-by-step guide for the construction of a model railroad with stunning mountain scenery. Along the way, you will get specific instructions as well as optional (albeit very helpful) tips. 

This particular model railroad layout is that of a 4mx2m HO layout. As you can see, the layout is still under construction. However, the baseboard, track risers, tracks, and ballast are already in place. Everything is already laid out so that you can gather plenty of tips and clever techniques that can be quite useful as you build mountain scenery. 

There are plenty of materials that were used to create the mountain scenery. There’s styrene boxes, aerosol triple expanding foam, and plaster cloth. In terms of tools, the owner only had to use a carving knife and a surform. 

Despite the simplicity of the methods, materials, and tools involved, the product is still a beautiful and realistic layout of mountain scenery. Read on and see for yourself. 

Making a Box Section

Materials for the model train layout with mountain scenery.

First, make a box section with openings. It should have spray paint inside with flat and black water-based acrylic. If you look closely, you will notice that there is a roof for the mountain scenery to go on top.

Breaking Up Styrene Boxes

Broken up styrene boxes for the model train with mountain scenery.

Next, break up the styrene boxes and randomly place them on the tunnel roof. Use your hands to give random patterns to the edges for a realistic cave layout above the tunnel opening. Make sure to get your boxes from a large supermarket to get the best quality.

Triple Expanding Foam Inside Tunnel

Outline of tunnel with broken styrene and triple expanding foam for the model train layout with mountain scenery.

Once that’s done, fill in everything with about 3 cans of aerosol triple expanding foam (around $14 at Home Depot). This will taper down into the base board. In this photo, notice also how the hand-broken styrene adds texture to the mountain.

Cured Expanding Foam

Cured expanding foam for the model train layout with mountain scenery.

The expanding foam will cure for approximately 24 hours. Afterwards, carve the foam using an electric carving knife and a surform. To add to the realism, chop at the form randomly.

Surform and Carving Knife

Surform and carving knife for the model train layout.

Once shaping is done, you can cover it in plaster cloth. You may reconsider using wadded newspaper because some modelers have had insect problems. To create the mountains, rivers, and waterfalls, use a surform.

Hardened Plaster for the Layout

Hardened plaster cloth for the model train layout with mountain scenery.

The cloth will harden after 24 hours. To reinforce the hardshell, create a mixture of plaster and dab it on.

Priming the Layout

Overview of the model train layout with mountain scenery.

Finally, prime the layout with a mixture of grey and acrylic primer mixed with some water and plaster.

When making the mountain scenery for your model train, make sure you take note of these steps. Remember to always create a box section first and fill it in with aerosol triple expanding foam. When you’re moulding your mountains, cut randomly with the carving knife to make it look real. As for wadded newspapers, it may be best to go with plaster cloth instead. 

Although you don’t have to follow all the steps that were made to build this particular layout, most of them are still quite helpful and can save you plenty of time and prevent any problems in the process. View more tutorials. 

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