Stone Walls and Tunnel D1 for Model Railroad N Scale

Design preview. Rendered from the file, not a photo.

The maker says it fits: Model railroad N-scale (scalable to HO/OO). See the proof

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What it does

Double-track tunnel entrance with stone walls designed for N-scale model railroads
Straight-track compatible; scale up 190% for HO/OO gauge layouts
Includes three wall sections for versatile scenery building and customization
Print-on-demand 3D model ready for your slicing software

This stone walls and tunnel set is designed for N-scale model railroad layouts, featuring a double-track tunnel entrance and three complementary wall sections. The modular design works perfectly for straight track installations and can be scaled up 190% in your slicing program to accommodate HO or OO gauge if needed.

Build realistic tunnel and stone wall scenery for your model train layout with this detailed 3D-printable design. Each component is engineered for clean printing and easy assembly into your miniature railroad diorama.

Note: For curved track applications, increase scale to accommodate longer rolling stock. Single-track tunnel variants are also available separately.

14k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What it fits

The maker says it fits: Model railroad N-scale (scalable to HO/OO)

That is the maker's word, not a fit we measured. Check the size below against your own.

Model railroad N-scale (scalable to HO/OO)From the maker's own listing title, checked 2026-08-13. See the original post

Brand names here only say what this part fits. We are not connected to those companies, and they did not make or check this part.

What you get

This design has 3 separate printed pieces.
Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PLA. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.