🚀 Adam (YC W25): Introducing CADAM

CADAM is a pioneering, open-source web application that leverages artificial intelligence to bridge the gap between natural language descriptions and functional 3D CAD models.

Traditional CAD requires manual vertex manipulation and complex boolean operations. With CADAM, you simply describe what you want, and the AI generates the parametric code.

🛠️ System Architecture & Workflow

The application transforms a user's intent into a physical geometry using the following pipeline:

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✨ Core Features & Capabilities

CADAM isn't just a generator; it's a full parametric design environment.

• AI-Driven Synthesis: Convert plain English or reference images into 3D geometry.
• Dynamic Parametrics: Adjust dimensions on the fly via interactive sliders.
• Universal Exports: Save your work as .STL, .SCAD, or .DXF.
• Client-Side Execution: Powered by WebAssembly (WASM) to run entirely in the browser.
• Extensive Library Support: Full integration with BOSL, BOSL2, and MCAD.

Detailed Capability Matrix

Feature	Description
Natural Language	Describe models in plain English for instant generation.
Visual Guidance	Upload images to provide a structural reference for the AI.
Live Rendering	Instant visual feedback provided by Three.js.
Auto-Parametrics	The system automatically extracts adjustable variables from the design.
Smart Iteration	Update specific parameters without needing to re-run the AI prompt.
Typography	Native support for the Geist font for integrated 3D text.

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🧪 Benchmarks & Performance

CADAM can handle everything from basic geometric primitives to highly complex mechanical assemblies. All examples below were generated from a single prompt and are fully parametric.

⚙️ Complex Mechanical Assemblies

Model	Prompt Summary	Controls	Output
V8 Engine	Complete internal combustion engine: 90° V, ribbed valve covers, intake manifold, crankshaft, pistons, and oil pan.	22 dims / 8 colors	Parametric SCAD
Radial Engine	9-cylinder aircraft engine: star pattern, cooling fins, domed heads, and propeller shaft hub.	15 dims / 6 colors	Parametric SCAD
Turbofan Jet	High-bypass turbofan: visible front fan, bypass cowl, internal core stages, and exhaust plug.	2 dims / 10 colors	Parametric SCAD
Turbine Blisk	Axial-flow bladed disk: central hub with 28 twisted aerofoil blades.	14 dims / 1 color	Parametric SCAD

📐 Parametric Fundamentals

Model	Prompt Summary	Controls	Output
Hexagonal Vase	150mm tall, 120° twist, tapering from 70mm to 50mm, 2mm walls.	6 dims / 1 color	Parametric SCAD
Knurled Knob	40mm dia, 22mm tall, diamond grip, D-shaft bore, and M3 set-screw hole.	15 dims / 2 colors	Parametric SCAD
Hex Bolt & Nut	M12 hex bolt (45mm) with real threads and matching nut.	3 dims / 2 colors	Parametric SCAD
Honeycomb Bracket	90° angle, 80x80mm flanges, hexagonal cutouts, M5 holes, filleted corner.	13 dims / 1 color	Parametric SCAD
NACA 2412 Wing	Tapered wing: 120mm root to 80mm tip, 200mm span, spar tubes, lightening holes.	9 dims / 1 color	Parametric SCAD
Threaded Jar	Storage jar (60mm dia, 70mm tall) with external threads and matching internal-thread lid.	9 dims / 2 colors	Parametric SCAD
Bevel Gear Drive	24-tooth vertical gear meshing at 90° with a 16-tooth horizontal pinion.	9 dims / 3 colors	Parametric SCAD
Pump Impeller	Centrifugal pump impeller with a 90mm diameter.	(In Progress)	Parametric SCAD

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💻 Technical Implementation

The underlying logic relies on the mathematical precision of OpenSCAD. For example, a simple parametric cylinder is defined by:

$V = \pi r^2 h$

In the CADAM environment, this is translated into code blocks similar to:

// Example of a parametric cylinder generated by CADAM
module parametric_cylinder(r, h) {
    cylinder(h = h, r = r, $fn = 100);
}

parametric_cylinder(10, 50); 

Get started today: 🌐 adam.new/cadam