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Overhead crane

A low-poly double-girder overhead bridge crane on its own four-column runway, carrying a mech part on its hook. It loops an 8-second cycle: the bridge travels along the runway, the trolley crosses the girders and the hook lifts and swivels.

Original GLB305 KB 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: 2,162
Vertices: 3,740
Meshes · materials: 63 · 63
Size (W × H × D): 15 m × 14 m × 12 m
File: GLB · 305 KB
Animation: scene-motion · 8.0s
Style: Low-poly
Collection: Mech Hangar

Palette · named materials

girder / hook block (safety yellow)#ffdd33
girder flanges / end trucks (safety yellow dark)#e6bf00
columns / runway beams (steel grey dark)#525860
braces / motor (steel grey)#757e8a
rails / hook / drum / axles (steel grey light)#a3a5a8
base plates (mid grey)#7d828c
trolley / cab windows / forearm load (navy)#1c2a54
end stops / buffers / brake / load accents (red)#c32222
wheels / cable / slings / hook-block stripes (soot black)#1b1b22
operator cab (warm white)#f2ede2

Use it

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

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/mech-hangar-overhead-crane/3046fa88d1/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:

Overhead crane for the Mech Hangar kit. Design it as one clear asset at believable real-world scale for that setting (state the size in metres in meta.notes), with its main parts modelled and named, readable at thumbnail size and from every orbit angle. It moves: author a seamless baked loop (2–12 s) with every pivot exactly at its hinge, axle or swivel, and keep the base still. This is one part of the Mech Hangar kit (Low-poly style, flat-lowpoly direction): A bay where giant robots are repaired. Use ONLY the kit palette, by name: steel grey #757e8a, safety yellow #ffdd33, navy #1c2a54, red #c32222, steel grey dark #525860, safety yellow dark #e6bf00, steel grey light #a3a5a8, safety yellow light #ffea80, soot black #1b1b22, warm white #f2ede2, mid grey #7d828c, dark wood #3d2a1c. Every material's `name` must be exactly the palette colour it uses — the GLB carries these names so the kit recolours as one; an unnamed material fails delivery. Kit knob: expose a param `mechColourAndLoadout` (0–1, default 0.5) for the kit's "Mech colour and loadout" setting wherever it makes sense on this part, and keep that id.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Generation: 4.15M tokens (95% cached) · ≈ $5.61 at API prices · 5-hour plan +11%
Direction: Low-poly · family abstract-kinetic
three-check PASS · glb-lint PASS

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Named parts · 32

Overhead crane
Column front left
Column front right
Column back left
Column back right
Runway beam left
Runway beam right
Crane rig
Bridge travel pivot
Bridge
Double girder
End truck left
Bridge wheel left front
Bridge wheel left back
End truck right
Bridge wheel right front
Bridge wheel right back
Operator cab
Trolley travel pivot
Trolley
Trolley wheel lf
Trolley wheel lb
Trolley wheel rf
Trolley wheel rb
Hoist drum axle
Hoist drum
Hoist cable
Hook lift
Hook block
Hook swivel
Hook
Mech part load

Note: Size: about 15 m wide (14 m span) x 13.8 m tall x 12 m deep (runway length), origin at the bottom centre, front facing +Z. The columns and runway beams never move. One baked 8 s loop (scene-motion): the bridge travels ±2.6 m along the runway, the trolley ±3 m across the girders, the hook lifts 3 m and swivels. Wheel and drum spin follow the distance travelled, and the loop closes exactly. Material names are the exact kit palette colour names. The exporter writes one material copy per mesh (63 in the GLB, 10 unique names), so recolour by material name. Motion pivots carry crane.* ids; visible parts carry mech-hangar-overhead-crane.* ids. mechColourAndLoadout picks the hook load in three bands: 0–0.33 red armour plate, 0.33–0.67 navy forearm (default), 0.67–1 warm-white mech head. It is a stepped choice, not a smooth blend. span, columnHeight, liftHeight and the loadout rebuild the model in the viewer. The GLB is the default configuration. glb-lint: 0 errors. Its verdict reads UNVERIFIED only because no requirements contract exists. Warnings were limited to the duplicate per-mesh materials, intended nested parts and the 13.8 m height versus a 1 m reference.