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LEGO DUPLO compatible Fire Truck — image 1
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LEGO DUPLO compatible Fire Truck

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This project is a Duplo-compatible fire truck with a functional ladder.

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Model information

License
Creative Commons — Attribution — Noncommercial — Share Alike

My daughter loves her DUPLO bricks—and she loves fire trucks! For her second birthday, I designed and printed this custom model.

This is a Duplo-compatible fire truck with a fully functional ladder, created from scratch. Its design is inspired by classic ladder trucks and intended as a fully playable toy.

Features:

Rotating and Telescopic Ladder: The ladder can be raised and extended, just like a real fire truck, and includes a rescue basket at the end.

Dual Rear Wheels: For improved stability and a realistic look, the rear axle is equipped with twin tires.

Opening Side Compartments: Each side of the truck has two large compartments that open, providing storage for small accessories or equipment.

Construction:

Printed in PETG for strength.

The cabin is secured using eight 6×3 mm magnets. Parts can also be glued; I used a combination of super glue and small M2.3×5 screws.

Tires are press-fitted onto the rims.

Durable Play Components:

Some flexible parts are printed in TPU to withstand play:

The safety railing is flexible to prevent breakage.

Tires are also TPU, giving them a realistic look and a softer, grippier feel.

Additional Notes:

A .3mf file is included with this project, in which all parts are pre-arranged by color and material, ready for printing.

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