Design mechanical parts and hardware with AI
Brackets, enclosures, assemblies, and hardware prototypes — describe what you need in plain language and iterate on precise geometry through conversation.
Free trial credits included · No credit card required
Prompt2CAD is used by mechanical engineers and hardware developers to rapidly prototype functional parts. Describe a telescoping bracket, a snap-fit electronics enclosure, a mounting plate, or a multi-part assembly, and the AI generates a parametric 3D model with precise dimensions. Iterate through conversation — "raise the inner track by 1.2mm", "add ventilation slots on the side panel", "make the flange 0.5mm thicker" — and converge on the exact geometry you need. Every model is parametric: adjust wall thickness, hole diameters, slot widths, and clearances with sliders. Export to STEP for Fusion 360 or SolidWorks, or STL for 3D printing prototypes.
How Prompt2CAD helps
Describe mechanical relationships
Explain how parts fit together in plain language — "the inner piece nests inside the outer piece with a 0.5mm clearance" — and the AI builds the geometry to match.
Sub-millimetre iteration
Adjust dimensions by fractions of a millimetre through conversation. Say "raise the flange by 0.3mm" or "widen the slot to 4.2mm" and the model updates instantly.
Parametric controls
Wall thickness, hole diameter, slot width, clearance gaps — every critical dimension becomes a slider you can drag to explore variations without re-describing the part.
Export for prototyping
Export to STEP for import into Fusion 360, SolidWorks, or FreeCAD. Export to STL for direct 3D printing of prototypes. All dimensions in real-world millimetres.
Try these prompts
Just type any of these into the chat to get started.
Export to your workflow
Download in the format you need — from CAD software to 3D printing.