Is the Assembly hall 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), 225 KB: 3,504 triangles, 6,424 vertices and 55 materials, modelled in metres at 21 m × 11 m × 28 m.

Can I animate Assembly hall?

It ships as a static mesh. Its 11 named parts are separate nodes, so you can move or animate each one in your engine.

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 Assembly hall 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

Assembly hall

A low-poly robot-factory assembly hall: a white-clad hall with an electric-blue sawtooth glazed roof. White robots ride the conveyor out of an orange line portal while an orange robot arm works over the line. A glazed control office, a side dock door with pallets and an exhaust stack complete it.

Original GLB225 KB Poster

Left rail: colours and the 3 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: 3,504
Vertices: 6,424
Meshes · materials: 55 · 55
Size (W × H × D): 21 m × 11 m × 28 m
File: GLB · 225 KB
Animation: Static
Style: Low-poly
Collection: Robot Factory

Palette · named materials

white — wall cladding, robot torsos#f4f1ec
light grey — sawtooth roof slopes, corner columns, conveyor frame, robot jigs and arms, exhaust stack, crate#a3a5a8
electric blue — roof glazing, wall livery band, office windows, conveyor rails, robot chest plates#136dec
orange — line portal frame, robot arm, dock door frame, bollards, robot shoulders, stack bands#ed7e1d
white dark — wall coping, office roof#d7cebc
light grey dark — plinth, conveyor legs, door drum box, arm joints, office kick plate#7c7f83
white light — ridge flashing, lane lines, office shell, robot heads, dock door slats#f9f8f6
light grey light — cladding seams, roller slats, vent caps#cccccc
soot black — portal interior, belt, mullions, doors, arm base and gripper, robot visors, vent fans#1b1b22
warm white — facade lamp lenses#f2ede2
mid grey — concrete pad, rooftop vent units#7d828c
dark wood — timber pallets#3d2a1c

Use it

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

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/robot-factory-assembly-hall/447391e97b/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:

Assembly hall for the Robot Factory 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 Robot Factory kit (Low-poly style, flat-lowpoly direction): A clean line that builds robots. Use ONLY the kit palette, by name: white #f4f1ec, light grey #a3a5a8, electric blue #136dec, orange #ed7e1d, white dark #d7cebc, light grey dark #7c7f83, white light #f9f8f6, light grey light #cccccc, 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 `lineSpeed` (0–1, default 0.5) for the kit's "Line speed" setting wherever it makes sense on this part, and keep that id.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Direction: Low-poly · family scenes
three-check PASS · glb-lint PASS

Make your own with 1DesignTool →

Named parts · 11

Assembly hall
Concrete pad
Walls
Sawtooth roof
Line portal
Assembly line
Robots on the line
Robot arm
Control office
Dock door and pallets
Rooftop plant

Note: Size: the hall is 16 m wide × 18 m deep (four 4.5 m sawtooth bays). The walls are 6.7 m to the eaves, the glazed sawtooth ridges reach 9.1 m and the exhaust stack cap 11.0 m. The overall footprint, including the concrete pad and the 7.5 m conveyor apron in front of the portal, is 20.6 m × 27.9 m. The origin is the bottom centre of that whole footprint, so the hall itself sits about 4.7 m behind the origin. The pad rests on y = 0 and the portal faces +Z. The GLB has 3,504 triangles across 55 draw calls (meshes are merged per part and colour) and no animation clip. Every material is named exactly after a kit palette colour and all 12 are used. The exporter writes one material per mesh, so the same colour name appears on several materials: recolour by name. Params are baked into the GLB at their defaults and only change the geometry when the scene is rebuilt in the viewer. width scales the hall span. bays sets the number of sawtooth roof bays and therefore the hall depth. lineSpeed (the kit's 'Line speed') does not animate anything because the asset is static. It packs the robots tighter on the conveyor instead: 0 gives 4 widely spaced units and 1 gives about 8. The innermost robot is always headless, still being built. glb-lint: 0 errors and 5 heuristic warnings. Two cover the material count, both from per-mesh materials. Another flags nested overlaps where bands, seams and frames are deliberately embedded in walls. The vents are flagged as detached because they are embedded in the roof slope of another part group. The last compares the height with the direction's 1 m reference. plan-check passes except for its part-id regex, which rejects the hyphens in the slug-based ids this library requires. three-check accepts those ids, and all 11 survive the GLB reload.

About the Assembly hall 3D model

Assembly hall is a free low-poly 3D model from the Robot Factory set. It measures 21 m × 11 m × 28 m (W × H × D) at real-world scale and is built from 3,504 triangles across 55 meshes, with 11 named parts. Download the 225 KB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Assembly hall 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), 225 KB: 3,504 triangles, 6,424 vertices and 55 materials, modelled in metres at 21 m × 11 m × 28 m.
Can I animate Assembly hall?: It ships as a static mesh. Its 11 named parts are separate nodes, so you can move or animate each one in your engine.
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 Assembly hall 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.