u/e-mando

I just tested a pretty insane workflow for generating complex Fusion 360 parts with AI and honestly it felt a bit like Tony Stark talking to Jarvis.

Instead of manually sketching everything from scratch, I used Claude + MCP connected directly into Fusion 360 to generate and modify geometry from prompts.

You can literally say things like:

• “Create a mounting bracket for a NEMA 17 motor”
• “Offset the walls by 3mm”
• “Add fillets to stress corners”
• “Add 4 M4 holes with 20mm spacing”

And it starts building the part inside Fusion.

The craziest part is the speed of iteration.
Normally I’d spend 20–30 minutes changing sketches, dimensions, constraints, and features. With MCP it feels more like directing an engineer than doing raw CAD work.

The workflow was basically:

1. Open Fusion 360
2. Run the Fusion MCP server
3. Connect Claude Desktop to MCP
4. Start prompting parts and modifications
5. Watch Fusion execute the operations

Not perfect yet, but for brackets, enclosures, fixtures, adapters, and robotics parts it already feels useful.

A few things I learned:

• Better results happen with step-by-step prompts and very specific instructions
• Parametric/simple geometry works best. You can updated as needed or go back what you dont like
• Exact dimensions help a lot
• Keeping the Fusion timeline organized matters

Honestly feels like we’re entering the “AI CAD copilot” era.
Curious if anyone else here is experimenting with MCP + CAD workflows yet.