Nx-Nass/Nasscad_4.2.7

Offline single-file 3D CAD — Manifold WASM CSG / Three.js

stars

commits

HTML

primary language

Jun 25, 2026

updated

www.nasscad.com/

all-in-one

browser-cad

cad

cad-software

csg

free

freeware

geometry

javascript

manifold

modeling

no-install

offline

parametric

single-file

solid-modeling

stl

threejs

webassembly

README

NASSCAD 4.2.7

Offline single-file 3D CAD modeler — Manifold WASM CSG / Three.js

NASSCAD is a fully offline, browser-based 3D CAD modeler. No server. No install. No internet. Open the HTML file — it works.

✨ Features

100% offline — zero CDN, zero server, zero dependencies to install
17 watertight primitives — ArcSphere, Cylind, Cubic, Tore, Gear, Screw, Pipe, RevSolid, Gen and more
Non-destructive CSG Tree — boolean operations with full arborescent history (200 undo/redo levels, IDB-persistent)
Progressive CSG (2-pass) — Manifold WASM engine + BSP fallback for maximum robustness
BVH Raycaster — AABB cache + firstHitOnly for sub-millisecond selection
GeometryPool — 512MB–2GB custom binary arena, GC mark-and-sweep, DataView global
Box-select — rectangle NDC multi-selection
NassScript — built-in scripting interface
Import / Export — STL, OBJ, 3MF
Threads — parametric M2 to M20 (UNC + metric)
Snap — 0.1 mm precision
X-Ray mode, Rotation Gizmo 3-axis, Sphere resolution slider

🏗 Architecture

Component	Details
Renderer	Three.js r128
CSG Engine	Manifold WASM (Worker Pool ×N async) + BSP fallback
Geometry Pool	512MB–2GB binary arena, GC mark-and-sweep
Undo / Redo	200 levels — TypedArrays structured clone, IDB-persistent
CSG History	Arborescent `_csgTree` Map — serialized in IndexedDB
Raycaster	BVH (AABB cache per mesh, firstHitOnly)
AABB Cache	Box3 world-space per mesh — rebuilt on position/scale change
Selection	Box-select rectangle NDC

📦 Dependencies (all local — zero CDN)

Library	Author	License
`three.js`	Mr.doob & community	MIT
`manifold.js` + `manifold_worker.js`	Emmett Lalish et al.	Apache 2.0
`helvetiker_regular/bold.js`	MAGENTA Ltd / MgOpen Modata	MgOpen License
`optimer_regular/bold.js`	MAGENTA Ltd / MgOpen Cosmética	MgOpen License
`gentilis_regular/bold.js`	J. Victor Gaultney / SIL International	SIL OFL 1.1
`NUTS_AND_BOLTS.js`	NassLab	CC BY-NC 4.0
`nasscad_logs.js`	NassLab	CC BY-NC 4.0

🚀 Usage

No installation required.

# Clone the repository
git clone https://github.com/Nx-Nass/Nasscad_4.2.7.git

# Open in your browser
open NASSCAD_V4_2_7_AIO.htm   # macOS
start NASSCAD_V4_2_7_AIO.htm  # Windows
xdg-open NASSCAD_V4_2_7_AIO.htm  # Linux

Or download the ZIP and open open NASSCAD_V4_2_7_AIO.htm directly in Chrome (best performance), Firefox, or Edge.

⚠️ For full WASM support, open via a local server or a browser that allows local file access (Chrome with --allow-file-access-from-files, or VS Code Live Server).

👥 Authors

Role
Architect & Lead Developer	Nasser — NassLab, Marseille, France
AI Developer	Claude Sonnet 4.6 — Anthropic

📄 License

Distributed under the Creative Commons BY-NC 4.0 license:

Personal and non-commercial use — free, redistribution allowed with attribution
Commercial use — written agreement required from NassLab

View full license →

No implied warranty. The author cannot be held liable for any damage resulting from the use of this software.

NASSCAD — co-developed with Claude Sonnet 4.6 · Marseille, 2026

Contributors

Nx-Nass

7 commits

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Nx-Nass/Nasscad_4.2.7

Offline single-file 3D CAD — Manifold WASM CSG / Three.js

stars

commits

HTML

primary language

Jun 25, 2026

updated

www.nasscad.com/

all-in-one

browser-cad

cad

cad-software

csg

free

freeware

geometry

javascript

manifold

modeling

no-install

offline

parametric

single-file

solid-modeling

stl

threejs

webassembly

README

NASSCAD 4.2.7

Offline single-file 3D CAD modeler — Manifold WASM CSG / Three.js

NASSCAD is a fully offline, browser-based 3D CAD modeler. No server. No install. No internet. Open the HTML file — it works.

✨ Features

100% offline — zero CDN, zero server, zero dependencies to install
17 watertight primitives — ArcSphere, Cylind, Cubic, Tore, Gear, Screw, Pipe, RevSolid, Gen and more
Non-destructive CSG Tree — boolean operations with full arborescent history (200 undo/redo levels, IDB-persistent)
Progressive CSG (2-pass) — Manifold WASM engine + BSP fallback for maximum robustness
BVH Raycaster — AABB cache + firstHitOnly for sub-millisecond selection
GeometryPool — 512MB–2GB custom binary arena, GC mark-and-sweep, DataView global
Box-select — rectangle NDC multi-selection
NassScript — built-in scripting interface
Import / Export — STL, OBJ, 3MF
Threads — parametric M2 to M20 (UNC + metric)
Snap — 0.1 mm precision
X-Ray mode, Rotation Gizmo 3-axis, Sphere resolution slider

🏗 Architecture

Component	Details
Renderer	Three.js r128
CSG Engine	Manifold WASM (Worker Pool ×N async) + BSP fallback
Geometry Pool	512MB–2GB binary arena, GC mark-and-sweep
Undo / Redo	200 levels — TypedArrays structured clone, IDB-persistent
CSG History	Arborescent `_csgTree` Map — serialized in IndexedDB
Raycaster	BVH (AABB cache per mesh, firstHitOnly)
AABB Cache	Box3 world-space per mesh — rebuilt on position/scale change
Selection	Box-select rectangle NDC

📦 Dependencies (all local — zero CDN)

Library	Author	License
`three.js`	Mr.doob & community	MIT
`manifold.js` + `manifold_worker.js`	Emmett Lalish et al.	Apache 2.0
`helvetiker_regular/bold.js`	MAGENTA Ltd / MgOpen Modata	MgOpen License
`optimer_regular/bold.js`	MAGENTA Ltd / MgOpen Cosmética	MgOpen License
`gentilis_regular/bold.js`	J. Victor Gaultney / SIL International	SIL OFL 1.1
`NUTS_AND_BOLTS.js`	NassLab	CC BY-NC 4.0
`nasscad_logs.js`	NassLab	CC BY-NC 4.0

🚀 Usage

No installation required.

# Clone the repository
git clone https://github.com/Nx-Nass/Nasscad_4.2.7.git

# Open in your browser
open NASSCAD_V4_2_7_AIO.htm   # macOS
start NASSCAD_V4_2_7_AIO.htm  # Windows
xdg-open NASSCAD_V4_2_7_AIO.htm  # Linux

Or download the ZIP and open open NASSCAD_V4_2_7_AIO.htm directly in Chrome (best performance), Firefox, or Edge.

⚠️ For full WASM support, open via a local server or a browser that allows local file access (Chrome with --allow-file-access-from-files, or VS Code Live Server).

👥 Authors

Role
Architect & Lead Developer	Nasser — NassLab, Marseille, France
AI Developer	Claude Sonnet 4.6 — Anthropic

📄 License

Distributed under the Creative Commons BY-NC 4.0 license:

Personal and non-commercial use — free, redistribution allowed with attribution
Commercial use — written agreement required from NassLab

View full license →

No implied warranty. The author cannot be held liable for any damage resulting from the use of this software.

NASSCAD — co-developed with Claude Sonnet 4.6 · Marseille, 2026

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420

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Contributors

Nx-Nass

7 commits

Languages

HTML

100.0%