Is the Arm units 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), 66 KB: 1,068 triangles, 1,357 vertices and 27 materials, modelled in metres at 86 cm × 1.6 m × 1.5 m.

Can I animate Arm units?

It ships as a static mesh. Its 7 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 Arm units 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

Arm units

A low-poly industrial robot arm unit: an orange six-axis arm on a grey bolted plinth, reaching forward over the line with a two-finger gripper pointing down. A small stack light on the plinth shows the line speed.

Original GLB66 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: 1,068
Vertices: 1,357
Meshes · materials: 27 · 27
Size (W × H × D): 86 cm × 1.6 m × 1.5 m
File: GLB · 66 KB
Animation: Static
Style: Low-poly
Collection: Robot Factory

Palette · named materials

orange — turret, lower arm, forearm, wrist fork, plinth safety edges#ed7e1d
light grey — plinth column, counterweight, gripper fingers, wrist sleeve#a3a5a8
light grey dark — base plate, plinth flange, rear motor pack, gripper body, counterweight band#7c7f83
light grey light — plinth service door, unlit stack-light segments#cccccc
white — shoulder motor covers, lower-arm service cover, forearm motor, rear motor cap#f4f1ec
electric blue — turret band, lower-arm band, forearm band, tool flange, lit stack-light segments#136dec
soot black — joint drums, J1 bearing ring, anchor bolts, cable loop, finger pads, stack-light pole and caps#1b1b22

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-arm-units/466fa50be6/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:

Arm units 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 products
three-check PASS · glb-lint PASS

Make your own with 1DesignTool →

Named parts · 7

Arm unit
Plinth
Turret
Lower arm
Forearm
Wrist and gripper
Stack light

Note: Size: 1.60 m tall, about 0.86 m wide, and 1.48 m deep from the back of the plinth to the gripper. The plinth is 0.86 m square and 0.36 m tall. The origin is at the bottom centre of the model's footprint (not the turret axis, which sits about 0.31 m behind it). The base plate rests on y = 0 and the arm reaches toward +Z. The GLB has 1,068 triangles in 27 meshes and no animation clip; it is a static asset in a fixed working pose. Every material is named exactly after a kit palette colour. The exporter writes one material per mesh, so a colour name repeats across materials: recolour by name. 7 of the 12 kit colours are used; white dark, white light, warm white, mid grey and dark wood are not. Params are baked into the GLB at their defaults and change the geometry only when the scene is rebuilt in the viewer. reach sets the forearm length, armRaise poses the arm from reaching low to lifted high, and gripOpen spreads the gripper fingers. lineSpeed (the kit's 'Line speed') animates nothing because the asset is static. It lights the stack light: 0 leaves all three segments dark grey, 1 lights all three electric blue, and the default lights two. The meshes are merged per part and colour, so the arm is not rigged: to animate the joints in an engine, split the parts or re-pivot them. glb-lint: 0 errors. Its verdict prints UNVERIFIED because 5 rules need a requirements contract or a manual review. It also gives 3 heuristic warnings: two about material count (per-mesh materials) and one about deliberately nested trim boxes. 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 7 survive the GLB reload.

About the Arm units 3D model

Arm units is a free low-poly 3D model from the Robot Factory set. It measures 86 cm × 1.6 m × 1.5 m (W × H × D) at real-world scale and is built from 1,068 triangles across 27 meshes, with 7 named parts. Download the 66 KB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Arm units 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), 66 KB: 1,068 triangles, 1,357 vertices and 27 materials, modelled in metres at 86 cm × 1.6 m × 1.5 m.
Can I animate Arm units?: It ships as a static mesh. Its 7 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 Arm units 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.