Is the Steam Locomotive 3D model free for commercial use?

Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.

What file format is it, and how big is it?

A single binary glTF 2.0 file (.glb), 5.4 MB: 188,334 triangles, 179,736 vertices and 106 materials, modelled in metres at 2.9 m × 4.1 m × 23 m.

Is Steam Locomotive animated?

Yes — the GLB carries a baked animation (4.0 s), ready to play with any glTF animation mixer.

Which engines and tools can open it?

Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.

How was the Steam Locomotive 3D model made?

Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.

FREEcommercial use · no sign-up

Steam Locomotive

A 4-6-2 Pacific express steam locomotive and six-wheel tender in deep green and black with brass bands, with a riveted boiler, hinged smokebox door and full Walschaerts valve gear. The driving wheels turn in a seamless 4-second loop with every rod and link following its pin.

Original GLB5.4 MB Poster

Left rail: colours and the 4 knobs the agent wrote into this model — they rebuild the geometry and go into your download. Right rail: looks for the viewer. Drag to orbit, scroll to zoom.

Triangles: 188,334
Vertices: 179,736
Meshes · materials: 106 · 106
Size (W × H × D): 2.9 m × 4.1 m × 23 m
File: GLB · 5.4 MB
Animation: scene-motion · 4.0s
Style: Product
Collection: Hero Props

Palette · named materials

body#1d4a34
trim#141619
brass#c99a45
metal#a9aeb3
accent#a8281d
glass#1c2a2f
coal#141417

Use it

import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/steam-locomotive/fecaae44b1/model.glb"
);
scene.add(gltf.scene); // metres, +Y up, front faces +Z

const mixer = new THREE.AnimationMixer(gltf.scene);
gltf.animations.forEach((clip) => mixer.clipAction(clip).play());
// in your loop: mixer.update(delta)

How it was made

The brief given to 1DesignTool's “3D object” template:

A 4-6-2 steam locomotive with tender (~22 m) in deep green and black with brass bands: riveted boiler, smokebox door with hinges and dart handle, chimney, steam and sand domes, whistle, full valve gear (connecting rods, crossheads, Walschaerts linkage) on spoked driving wheels with counterweights, bogie and trailing wheels, cab with windows and handrails, tender with coal load and ladders. Drivers turn with linked rods in a baked seamless loop.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Direction: Product · family vehicles
three-check PASS · glb-lint PASS

Make your own with 1DesignTool →

Named parts · 39

Steam locomotive
Frames, running plate and buffer beams
Cylinders, valve chests and slide bars
Boiler, firebox, bands and handrails
Smokebox, door, hinges and lamps
Chimney
Steam dome, sand dome, safety valves and whistle
Cab
Leading bogie frame
Brake gear and sand pipes
Bogie wheels front
Bogie wheels rear
Leading driving wheels
Main driving wheels
Trailing driving wheels
Trailing truck wheels
Coupling rod left
Coupling rod right
Connecting rod left
Connecting rod right
Crosshead and piston rod left
Crosshead and piston rod right
Combination lever left
Combination lever right
Radius rod left
Radius rod right
Expansion link left
Expansion link right
Eccentric rod left
Eccentric rod right
Valve rod left
Valve rod right
Drawbar, fall plate and hoses
Tender frames, axleboxes, springs and buffers
Tender tank, coping, lockers, ladders and handrails
Coal load
Tender wheels front
Tender wheels middle
Tender wheels rear

Note: 188,334 triangles in the GLB, 106 meshes (one per role per part). Real scale in metres: about 22.8 m over buffers, 2.9 m wide, 4.15 m tall, standard gauge, front (smokebox) toward +Z, origin at bottom centre with the wheel flanges on y = 0 (no track included). The 4 s clip 'scene-motion' turns the drivers two whole turns and the smaller wheels whole turns rounded to their diameter, so the smaller wheels very slightly slip rather than roll exactly. The valve gear is a solved linkage: every rod keeps its length through the loop. All four params change the exported geometry or clip; cutoff moves the die in the expansion link, so it changes the valve-gear motion only. The exporter writes a material copy per mesh, but there are only seven role names (body, trim, brass, metal, accent, glass, coal), so merge by name if your engine wants seven materials. glb-lint has 0 errors. Its warnings are the plan's declared triangle/draw-call overrides for the Hero Props target, the per-mesh material copies, its 0.15 m product reference scale, and overlap/detached heuristics for single-mesh rods and the coal load, all of which were checked in captures. design-plan.md keeps the hyphenated part ids. plan-check's id regex rejects hyphens, so it was verified as PASS on a de-hyphenated copy.

About the Steam Locomotive 3D model

Steam Locomotive is a free animated PBR 3D model from the Hero Props set. It measures 2.9 m × 4.1 m × 23 m (W × H × D) at real-world scale and is built from 188,334 triangles across 106 meshes, with 39 named parts and a baked animation (4.0 s). Download the 5.4 MB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Steam Locomotive 3D model free for commercial use?: Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.
What file format is it, and how big is it?: A single binary glTF 2.0 file (.glb), 5.4 MB: 188,334 triangles, 179,736 vertices and 106 materials, modelled in metres at 2.9 m × 4.1 m × 23 m.
Is Steam Locomotive animated?: Yes — the GLB carries a baked animation (4.0 s), ready to play with any glTF animation mixer.
Which engines and tools can open it?: Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.
How was the Steam Locomotive 3D model made?: Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.