Is the Rocks and logs 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: 774 triangles, 2,322 vertices and 12 materials, modelled in metres at 3.5 m × 99 cm × 2.3 m.

Can I animate Rocks and logs?

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 Rocks and logs 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

Rocks and logs

A low-poly zoo enclosure set piece: a big faceted grey boulder with smaller rocks, a fallen log with ringed cut ends and a broken branch stub, and an old tree stump, with moss and grass tufts that grow with the habitat mix.

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: 774
Vertices: 2,322
Meshes · materials: 12 · 12
Size (W × H × D): 3.5 m × 99 cm × 2.3 m
File: GLB · 66 KB
Animation: Static
Style: Low-poly
Collection: Zoo

Palette · named materials

mid grey: boulder and small rocks#7d828c
timber: log bark and branch stub#765232
dark wood: stump bark and the bark rim on every cut end#3d2a1c
sand: sapwood ring on cut ends, snapped branch tip#d1bd94
sand dark: heartwood at the centre of cut ends#ba9c5e
leaf green: moss on up-facing rock and log facets#3a883a
leaf green light: grass blades#5db15d
leaf green dark: grass blades#235223

Use it

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

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/zoo-rocks-and-logs/2afaf4fcf1/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:

Rocks and logs for the Zoo 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 Zoo kit (Low-poly style, flat-lowpoly direction): Enclosures and winding paths. Use ONLY the kit palette, by name: leaf green #3a883a, sand #d1bd94, timber #765232, sign yellow #eecd2b, leaf green dark #235223, sand dark #ba9c5e, leaf green light #5db15d, sand light #e6ddcb, 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 `habitatMix` (0–1, default 0.5) for the kit's "Habitat mix" setting wherever it makes sense on this part, and keep that id.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Generation: 4.10M tokens (96% cached) · ≈ $2.72 at API prices · 5-hour plan +12%
Direction: Low-poly · family products
three-check PASS · glb-lint PASS

Make your own with 1DesignTool →

Named parts · 7

Rocks and logs
Boulder
Small rocks
Fallen log
Tree stump
Moss
Grass tufts

Note: Size: 3.54 m wide (X) by 2.34 m deep (Z) by 0.99 m tall. The boulder is about 1 m tall and the fallen log is 2.0 m long with a 0.38 m diameter. The stump is 0.48 m tall and the small rocks run 0.17 to 0.46 m. The front faces +Z, the origin is at the bottom centre and every piece rests on y = 0. Rocks have flat bases, the log lies on a flat facet and the grass blades start at the ground. The exported model has 774 triangles in 12 meshes. Every material is named exactly after a kit palette colour; 8 of the 12 are used. The runtime gives each mesh its own material copy at export, so mid grey, sand, sand dark and dark wood each appear twice (once per part) under the same name. The model is static, with no animation clip. Params are baked into the GLB at their defaults and only change the model when the scene is rebuilt in the viewer. habitatMix (the kit's 'Habitat mix') runs from bare dry stone and wood at 0, with no moss or grass, to moss on every up-facing facet and seven grass tufts at 1. At 0 the moss and grass parts are present but empty. The moss is the rock and log surfaces' own faces in a second material, so it cannot float or z-fight. The branch stub is deliberately rooted inside the log. Both extremes passed three-check: all-max params export 914 triangles and all-min export 454. At all-max the hero view's frame edge clips the front-right grass tuft (viewer framing only, not the model). glb-lint: 0 errors and 5 heuristic warnings. These cover the per-part duplicate material copies, non-indexed geometry (deliberate flat shading), overlapping bounding boxes within the log (cut-end rings and branch), and cut-top rings and moss that sit on their host surfaces rather than the ground. Its verdict reads UNVERIFIED only because no host requirements contract was supplied. plan-check passes except for its part-id regex, which rejects the hyphens in the slug-based ids this library requires; three-check accepts them and all 7 survive the GLB reload. Viewer exposure is 0.85 rather than the direction's 1.05 because the pale kit palette washed out under the sun rig; this does not affect the GLB.

About the Rocks and logs 3D model

Rocks and logs is a free low-poly 3D model from the Zoo set. It measures 3.5 m × 99 cm × 2.3 m (W × H × D) at real-world scale and is built from 774 triangles across 12 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 Rocks and logs 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: 774 triangles, 2,322 vertices and 12 materials, modelled in metres at 3.5 m × 99 cm × 2.3 m.
Can I animate Rocks and logs?: 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 Rocks and logs 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.