Is the Coal sacks 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), 122 KB: 1,574 triangles, 4,722 vertices and 12 materials, modelled in metres at 1.6 m × 1.3 m × 1.5 m.

Can I animate Coal sacks?

It ships as a static mesh. Its 6 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 Coal sacks 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

Coal sacks

A low-poly coalman's drop for a Victorian street: sooty grey hessian coal sacks with twine-tied necks and a brick-red merchant's band, one stood open and heaped with black coal with a shovel stuck in it, one slumped on its side, and lumps of coal spilt on the pavement.

Original GLB122 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: 1,574
Vertices: 4,722
Meshes · materials: 12 · 12
Size (W × H × D): 1.6 m × 1.3 m × 1.5 m
File: GLB · 122 KB
Animation: Static
Style: Low-poly
Collection: Victorian Street

Palette · named materials

mid grey — sooty hessian sacks and rolled cuff (body); shovel blade (metal)#7d828c
brick red — merchant's band on every sack (trim)#c32222
warm white — twine neck ties (trim)#f2ede2
soot black dark — coal heap in the open sack (base)#090a0b
soot black — coal lumps (accent)#151619
soot black light — lit coal lumps and the fog soot skirt on the sacks (grime)#3a3c40
dark wood — shovel handle and grip (structure)#3d2a1c
brass — shovel ferrule (accent)#b28c34

Use it

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

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/victorian-street-coal-sacks/7e120f0e45/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:

Coal sacks for the Victorian Street 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 Victorian Street kit (Low-poly style, flat-lowpoly direction): Gaslight, soot and shop windows. Use ONLY the kit palette, by name: brick red #c32222, soot black #151619, bottle green #3a883a, brass #b28c34, brick red dark #821717, soot black dark #090a0b, brick red light #db5757, soot black light #3a3c40, 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 `fogLevel` (0–1, default 0.5) for the kit's "Fog level" 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 · 6

Coal sacks
Sacks
Twine ties
Coal heap
Loose coal
Coal shovel

Note: Size at the defaults: 1.63 m wide (X) × 1.48 m deep (Z) × 1.26 m tall to the shovel grip. Each tied sack is 0.85 m tall to the neck tuft (about 0.92 m with it) and about 0.55 m across the belly, roughly a 1 cwt Victorian coal sack; the open sack is about 0.61 m tall to its cuff. The open sack faces +Z. The origin is at the bottom centre of the footprint and everything rests on y = 0. The GLB has 1,574 triangles in 12 meshes (merged per part and colour), no animation clip, and flat-baked non-indexed normals. Every material is named exactly after its kit palette colour (8 of the 11 kit colours); the exporter writes one material per mesh, so names repeat — recolour by name. fogLevel (the kit's 'Fog level') is the damp soot the fog leaves behind: a soot-black-light grime skirt climbs the standing sacks from 5% of their height (low fog) to 35% (thick fog) and disappears at 0; the slumped sack has no skirt, and the fog itself belongs to the street scene. sackCount: 2 = open sack plus one tied sack, 3 adds the second tied sack, 4 adds the slumped sack in front. sackHeight scales the sacks and spreads the layout a little; coalHeap sets how high the coal rises above the open sack's cuff. Params are baked into the GLB at their defaults and change geometry only when the scene is rebuilt in the viewer; only the defaults were rendered and checked. glb-lint: 0 errors and 5 heuristic warnings, all expected: per-mesh materials push the count past 10 and repeat names, geometry is deliberately non-indexed for hard facets, coal, cuff and band runs nest inside the sacks, and the twine ties rest on the sacks (a different part) so they are flagged as detached. plan-check passes except for its part-id regex, which rejects the hyphenated slug ids this library requires; the same plan de-hyphenated passes, and three-check and the GLB reload keep all 6 ids. Three fix rounds: darker exposure and lumpier, squatter sacks so they stop reading as white bottles, then two hero-framing passes to keep the spilt coal clear of the viewer's buttons.

About the Coal sacks 3D model

Coal sacks is a free low-poly 3D model from the Victorian Street set. It measures 1.6 m × 1.3 m × 1.5 m (W × H × D) at real-world scale and is built from 1,574 triangles across 12 meshes, with 6 named parts. Download the 122 KB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Coal sacks 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), 122 KB: 1,574 triangles, 4,722 vertices and 12 materials, modelled in metres at 1.6 m × 1.3 m × 1.5 m.
Can I animate Coal sacks?: It ships as a static mesh. Its 6 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 Coal sacks 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.