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Catwalks

A raised steel catwalk for a mech repair bay: a grated walkway on braced column frames with safety-yellow handrails, hazard-striped edges, a cantilevered access platform and a steep stair down to the floor.

Original GLB200 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: 3,536
Vertices: 6,858
Meshes · materials: 20 · 9
Size (W × H × D): 15 m × 6.3 m × 3.0 m
File: GLB · 200 KB
Animation: Static
Style: Low-poly
Collection: Mech Hangar

Palette · named materials

steel grey#757e8a
steel grey dark#525860
steel grey light#a3a5a8
safety yellow#ffdd33
safety yellow dark#e6bf00
soot black#1b1b22
mid grey#7d828c
navy#1c2a54
red#c32222

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-catwalks/a898f9995f/model.glb"
);
scene.add(gltf.scene); // metres, +Y up, front faces +Z

How it was made

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

Catwalks 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. 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: 5.92M tokens (96% cached) · ≈ $3.76 at API prices · 5-hour plan +13%
Direction: Low-poly · family scenes
three-check PASS · glb-lint PASS

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Named parts · 7

Catwalks
Column frames
Grated deck
Handrails
Access platform
Stair
Beacon and loadout

Note: Default size 15.2 m long × 6.3 m tall × 3.0 m deep (10 m walkway, deck surface at 5 m, 1.4 m wide, 45° stair, 1.1 m handrails), origin at bottom centre, front (+Z) is the side with the access platform. 3,536 triangles, 9 palette-named flat-shaded materials, static (no animation). mechColourAndLoadout sets the canister colour (navy below 0.33, red up to 0.66, warm white above) and the canister count (1–4; the shortest spans fit at most 3). Each part has an outer node with the library id (mech-hangar-catwalks.*) and an inner '<part>-meshes' node with the hyphen-free id the kit's plan validator needs (mechhangarcatwalks.*). glb-lint: 0 errors, 2 expected warnings (nested part bounds, 6 m height vs the 1 m reference).