Is the Pit building 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), 114 KB: 1,236 triangles, 3,708 vertices and 33 materials, modelled in metres at 38 m × 15 m × 17 m.

Can I animate Pit building?

It ships as a static mesh. Its 10 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 Pit building 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

Pit building

A low-poly modern pit building for a race circuit: a row of garage bays with roller doors facing the pit lane, team livery panels, a glazed hospitality floor with a timber balcony under a cantilevered roof, and a race control tower with leaning glass at one end.

Original GLB114 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: 1,236
Vertices: 3,708
Meshes · materials: 33 · 33
Size (W × H × D): 38 m × 15 m × 17 m
File: GLB · 114 KB
Animation: Static
Style: Low-poly
Collection: Racing Circuit

Palette · named materials

walls, tower core (warm white)#f2ede2
roof slab, tower cap, plain livery panels (kerb red and white)#f4f1ec
garage piers, floor slab, tower ledge (kerb red and white dark)#d7cebc
balcony and roof fascias, control-room posts (kerb red and white light)#f9f8f6
team livery panels and door stripes (flag colours)#988e81
glazing (tarmac dark)#101113
garage floors (tarmac)#34373d
roller doors, rooftop plant (tarmac light)#5c5d61
garage interiors, service doors, railings, mast (soot black)#1b1b22
plinth, roof membrane, mullions, door roll boxes (mid grey)#7d828c
balcony decking (dark wood)#3d2a1c

Use it

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

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/racing-circuit-pit-building/7a9e89781c/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:

Pit building for the Racing Circuit 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 Racing Circuit kit (Low-poly style, flat-lowpoly direction): Speed, pit stops and crowds. Use ONLY the kit palette, by name: tarmac #34373d, kerb red and white #f4f1ec, flag colours #988e81, grass #539b3b, tarmac dark #101113, kerb red and white dark #d7cebc, tarmac light #5c5d61, kerb red and white light #f9f8f6, 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 `teamLiveries` (0–1, default 0.5) for the kit's "Team liveries" 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 · 10

Pit building
Plinth
Building body
Garage bays
Roller doors
Team livery panels
Balcony
Glazing
Roof and canopy
Race control tower

Note: Size at default params: 38.4 m long (X) × 17.45 m deep (Z) × 14.9 m tall to the top of the mast. The hospitality roof is at 9.7 m and the control-tower cap at 13.4 m; each garage bay is 5 m wide with a 3.8 m-high opening. Origin at the bottom centre, resting on y = 0. The pit-lane front (garages, balcony, canopy) faces +Z, and the race control tower stands at the −X end. Static: no animation clip. The GLB is baked at the default params: 1,236 triangles, 33 meshes, one per part and palette colour. Every material is named after its kit palette colour so the kit recolours by name, and names repeat because the exporter writes one material per mesh. Team liveries (the kit knob): the share of bays, spread evenly along the row, whose fascia panel, header panel and door stripe are painted in flag colours rather than plain kerb white or black. At 0.5, 3 of the 6 bays are liveried. Garage bays changes the building's length (3 bays ≈ 23 m, 10 bays ≈ 58 m). Roller doors open rolls every door up, and at 1 the doors disappear into their roll boxes. Roof canopy depth sets how far the roof slab cantilevers past the garage front. Knobs rebuild the model in the viewer only; the GLB is the default build. glb-lint: 0 errors and 6 heuristic warnings, all expected: per-mesh duplicate palette materials, non-indexed flat-shaded geometry, nested trim panels counted as overlaps, wall-mounted panels and railings counted as 'detached', and a height above the direction's 1 m reference because this is a building. The kit's plan-check rejects the hyphenated library part ids, because its regex allows no hyphen in the first segment. That is its only complaint; a de-hyphenated copy of the plan passes. three-check and the GLB carry the ids correctly.

About the Pit building 3D model

Pit building is a free low-poly 3D model from the Racing Circuit set. It measures 38 m × 15 m × 17 m (W × H × D) at real-world scale and is built from 1,236 triangles across 33 meshes, with 10 named parts. Download the 114 KB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Pit building 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), 114 KB: 1,236 triangles, 3,708 vertices and 33 materials, modelled in metres at 38 m × 15 m × 17 m.
Can I animate Pit building?: It ships as a static mesh. Its 10 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 Pit building 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.