Skip the CAD Grind: Generate Editable 3D Models from Plain English

Tired of spending hours modeling standard parts from scratch? The gNucleus Text-To-CAD MCP server connects your AI assistant directly to professional CAD generation. Just describe what you need in natural language, and get back actual editable CAD files.

The Problem Every CAD User Knows

You need a custom flange with 8 bolt holes. Or a spur gear with 24 teeth. Or a tapered roller bearing assembly. Sure, you could spend 45 minutes clicking through menus, setting constraints, and tweaking dimensions. Or you could just ask for it and move on to the interesting work.

What You Get

This MCP server turns any MCP-compatible client (like Claude Desktop) into a CAD generation powerhouse. One natural language prompt becomes:

• Editable CAD models in standard formats
• 3D visualization with interactive viewer
• Parametric designs with key specifications documented
• Complex assemblies generated as complete units

Tell Claude "draw a spur gear shaft with 20 teeth" and get back a properly dimensioned CAD file with gear profiles, keyways, and mounting features already configured.

Real Workflow Integration

Here's how this changes your CAD workflow:

Before: Open CAD software → Navigate part libraries → Configure parameters → Model missing features → Export → Repeat for each component

After: "Generate a tapered roller bearing for a 25mm shaft" → Download editable CAD file → Done

The server integrates directly into Claude Desktop, so CAD generation happens in the same conversation where you're discussing design requirements, material specs, or assembly constraints.

Beyond Basic Shapes

This isn't just about boxes and cylinders. Ask for:

• Mechanical assemblies: "Generate a tapered roller bearing" returns inner race, outer race, rollers, and cage as separate components
• Parametric parts: "Draw an elbow flange with 4 bolt holes" creates properly sized flanges with standard bolt patterns
• Custom dimensions: "Block with length=80mm, width=40mm, height=20mm" generates exact specifications

The AI understands mechanical context - ask for a gear shaft and you get proper tooth profiles, not just a cylinder with bumps.

Multilingual Design

Works in your preferred language:

• "在CAD中绘制一个大小为10mm的方块" (Chinese)
• "Dibuja un bloque cuadrado de 10 mm en CAD" (Spanish)
• Standard English technical descriptions

Perfect for international teams or when technical documentation is in multiple languages.

Getting Started

1. Get your API key: Sign up at gnucleus.ai (300 free credits included)
2. Clone and configure: Standard Python setup with your API credentials
3. Connect to Claude: Add the server to your Claude Desktop configuration
4. Start generating: Add "in CAD" to prompts for best results

The setup is straightforward - you'll be generating CAD models from text in under 10 minutes.

Perfect For

• Rapid prototyping: Generate concept parts without the modeling overhead
• Standard components: Get common mechanical parts (gears, flanges, bearings) instantly
• Design exploration: Quickly iterate on part variations by tweaking descriptions
• Educational use: Generate examples for CAD training without manual modeling

This MCP server belongs in the toolkit of anyone who regularly creates or modifies CAD models. It's the difference between spending your time on creative design work versus repetitive modeling tasks.

Ready to skip the CAD busywork? Your next custom part is just a conversation away.