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3D Printing & Prototyping
Design brackets, enclosures, adapters, and custom parts — then export STL files ready for FDM, SLA, or SLS printers. scAId's parametric approach means you can adjust tolerances with a single variable change.
Free AI-powered text-to-CAD platform
Design in Code. Render Instantly.
The free, browser-based 3D modeling tool that turns text into printable geometry. Write OpenSCAD code or describe your model in plain English — scAId's AI generates parametric 3D models with real-time preview and one-click STL export.
What is scAId?
AI-powered text-to-CAD,
right in your browser
scAId is a free, browser-based platform that lets you create 3D models by writing code or describing them in plain English. Unlike traditional CAD software that requires expensive licenses and steep learning curves, scAId puts the power of parametric 3D design in the hands of anyone with a web browser.
At its core, scAId is an OpenSCAD-compatible editor with a real-time WebGL viewport. You write declarative code using variables, loops, and CSG boolean operations — then hit Ctrl+Enter to see your model render in milliseconds. But what makes scAId unique is its integrated AI assistant: describe what you want in plain English, and the AI generates the parametric OpenSCAD code for you. It's text-to-CAD in the most literal sense.
Whether you're a 3D printing hobbyist prototyping bracket designs, a mechanical engineer sketching out quick concepts, or a student learning parametric design for the first time — scAId eliminates the friction between having an idea and holding a physical part. Write code, preview it, export the STL, print it. That's the workflow.
Zero install
Runs entirely in your browser. No downloads, no plugins, no system requirements.
AI-assisted modeling
Describe what you want in plain English. The AI writes the OpenSCAD code for you.
100% free
No signup, no trial, no paywalls. Open the editor and start building immediately.
3D print ready
One-click STL export. Compatible with Cura, PrusaSlicer, BambuStudio, and every slicer.
Everything you need in one tool
A complete text-to-CAD workspace — code editor, 3D viewport, AI assistant, and export pipeline — all running client-side in your browser.
Real-time 3D preview
Write OpenSCAD code on the left, see your 3D model update on the right. Orbit, pan, and zoom the viewport — all rendered in WebGL at 180+ FPS with no server round-trips.
CSG Booleans
Union, difference, intersection — the building blocks of constructive solid geometry. Combine primitives into complex mechanical parts, housings, and assemblies.
Parametric Variables
Define dimensions as variables. Use mathematical expressions and for-loops. Change one value, and the entire model updates — true parametric design for rapid prototyping.
STL & OBJ Export
One-click download to STL or OBJ format. Send directly to your slicer for 3D printing, or import into Blender, Fusion 360, or any CAD tool. No conversion needed.
AI Text-to-CAD
Describe your model in plain English — "a gear with 20 teeth and a 5mm bore" — and the AI generates OpenSCAD code. Edit and iterate with conversational prompts.
Keyboard-First Workflow
Ctrl+Enter to render. Ctrl+S to save. Camera presets on F, T, R, I. Designed for engineers and makers who think faster than they click.
Console & Debugging
Integrated console shows parse timing, vertex counts, and errors. Debug your geometry and inspect model statistics without leaving the editor environment.
Built for makers, engineers, and students
From quick prototypes to classroom projects, scAId fits the way you already work.
⚙️
Mechanical Engineering
Sketch gear trains, housings, and assemblies using CSG booleans and precise parametric dimensions. Ideal for concept validation before moving designs to production-grade CAD systems.
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Education & Learning
Teach or learn parametric design, computational geometry, and 3D modeling fundamentals without expensive software licenses. scAId runs in any browser — perfect for classrooms and remote students.
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DIY & Maker Projects
Design custom tool holders, cable management clips, gadget cases, and one-off parts. scAId's template library gives you starting points, and the AI assistant helps you iterate fast.
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Robotics & Hardware
Quickly model motor mounts, sensor brackets, chassis components, and custom connectors. Parametric variables let you scale designs to different actuator and board dimensions instantly.
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Product Design Ideation
Go from sketch to 3D concept in minutes, not hours. Use AI prompts to explore variations, then export for stakeholder review or rapid prototyping. Perfect for early-stage product development.
Code → Preview → Print
Three steps from idea to physical part. No friction, no waiting.
1
Write
Define geometry with OpenSCAD's declarative language — or use the AI assistant to describe your model in plain English. Variables, loops, and booleans give you full parametric control.
2
Preview
Hit Ctrl+Enter. Your model renders in milliseconds with full lighting, shadows, and interactive orbit controls. Inspect every angle in the WebGL viewport at 180+ FPS.
3
Export & Print
Download as STL or OBJ with one click. Load into Cura, PrusaSlicer, or BambuStudio. Print. Hold your design in your hands — from code to physical part in minutes.
Why scAId over traditional CAD?
We're not trying to replace Fusion 360 or SolidWorks. But for fast prototyping, learning, and 3D printing — scAId gets you there faster.
| Feature | scAId | Traditional CAD | Desktop OpenSCAD |
|---|---|---|---|
| Price | Free forever | $60–500/year | Free |
| Installation | None — browser only | 2–8 GB download | 200 MB download |
| AI assistance | Built-in AI chat | Third-party plugins | None |
| Parametric design | Full support | Full support | Full support |
| Real-time preview | Instant (WebGL) | Instant | Manual render |
| STL export | One click | Supported | Supported |
| Learning curve | Minutes | Weeks to months | Days |
| Cross-platform | Any browser | OS-specific | OS-specific |
Built for speed
scAId's rendering engine parses models in under 40ms. The 3D viewport runs at 180+ FPS using hardware-accelerated WebGL. Everything happens on the GPU — no server round-trips, no waiting. Your code, your browser, your geometry.
0
FPS
<40
ms parse
0
server calls
Frequently asked questions
Answers to the most common questions about scAId, text-to-CAD, and browser-based 3D modeling.
What is text-to-CAD?
Text-to-CAD is a method of creating 3D models by writing code or natural language descriptions instead of using a traditional click-and-drag CAD interface. With scAId, you can write OpenSCAD-compatible code using parametric variables, loops, and CSG boolean operations — or simply describe what you want in plain English and let the AI generate the geometry for you. It's the fastest way to go from an idea to a 3D-printable model.
Is scAId really free?
Yes. scAId is 100% free with no hidden costs, no trial periods, and no feature limits. You can use the full editor, render models in real-time, export STL and OBJ files, and even use the AI assistant — all without creating an account. Optional signup enables cloud project saving and collaboration features, but the core tool is completely free forever.
Can I export files for 3D printing?
Absolutely. scAId supports one-click export to STL format, which is the universal standard for 3D printing. STL files from scAId work with every popular slicer including Cura, PrusaSlicer, BambuStudio, and OrcaSlicer. You can also export to OBJ format for use in Blender, Fusion 360, and other 3D applications. There's even SCAD source code download if you want to continue editing in desktop OpenSCAD.
Do I need to install anything?
No. scAId runs entirely in your web browser — Chrome, Firefox, Safari, or Edge. There are no downloads, no plugins, and no system dependencies. The code editor, 3D renderer, and export engine all run client-side using WebGL and JavaScript. Your models never leave your browser unless you explicitly export or save them to the cloud.
Is scAId compatible with OpenSCAD?
Yes. scAId uses an OpenSCAD-compatible parser and rendering engine. You can write standard OpenSCAD syntax including modules, variables, for-loops, if-else logic, and all CSG operations (union, difference, intersection). Import your existing .scad files, edit them in the browser, and export the results — or download the .scad source to use in the desktop OpenSCAD application.
How does the AI assistant work?
scAId's AI assistant accepts natural language descriptions and generates OpenSCAD code. You can type prompts like "create a box with a lid that snaps on" or "add ventilation holes to the sides" and the AI will write the parametric code for you. You can also click directly on faces of your 3D model to make targeted edits — resize dimensions with quick controls, or describe complex modifications for the AI to implement. It's designed to complement manual coding, not replace it.
What is parametric modeling and why does it matter?
Parametric modeling means defining your 3D geometry using variables and mathematical expressions rather than fixed dimensions. Instead of hardcoding "width = 50mm", you write width = base_width * 2 + clearance. Change one variable, and every dimension that references it updates automatically. This makes designs adaptable — need a smaller version of your bracket? Change one number. Need to account for printer tolerance? Add a clearance variable. scAId's code-based approach makes parametric modeling natural and intuitive.
What is CSG (Constructive Solid Geometry)?
CSG is a technique for building complex 3D shapes by combining simpler primitives using boolean operations. Union merges two shapes together. Difference subtracts one shape from another (like drilling a hole). Intersection keeps only the volume where shapes overlap. In scAId, CSG operations are first-class features — you can nest them, combine them with loops, and build anything from simple brackets to intricate multi-part assemblies.
How does scAId compare to Fusion 360, TinkerCAD, or SolidWorks?
scAId occupies a unique niche. Unlike Fusion 360 or SolidWorks, it requires no download, no subscription, and no account. Unlike TinkerCAD, it offers full parametric control through code and an AI assistant. scAId is ideal for rapid prototyping, educational use, and 3D printing workflows where you want to go from idea to STL in minutes. For production mechanical engineering, traditional CAD still has deeper tooling — but for everything else, scAId is faster, simpler, and free.
Can I save and share my projects?
Yes. Without an account, your projects save locally in your browser's storage. With a free account, you can save projects to the cloud, access them from any device, and share them with other scAId users. You can grant view-only or edit access when sharing, making it easy to collaborate on designs with teammates, classmates, or clients.
Start building — it's free
No signup. No install. No paywall. Open the editor and create your first 3D model in under a minute.
Open Editor →