Cadfai Built for engineers,
not for demos.
Real STEP files
Parametric B-rep solids you can open in SolidWorks, Fusion, Onshape, or FreeCAD — with accurate millimetre dimensions, ready to edit.
Print-ready STL
Watertight meshes that drop straight into your slicer. From prompt to printer in one step, no repair passes needed.
Solids, not meshes
Every part is a true solid model with real dimensions — not a mesh blob, not an approximation.
Speak in specs
“M8 bolt, 40mm long” or “flange, 120mm OD, 6 holes on a 90mm PCD.” Cadfai understands the language mechanical parts are described in.
Inspect in 3D
Orbit, section, and measure right in the browser before you download. Front, top, iso — the views you already think in.
Your history, kept
Every part you generate stays in your session, ready to re-open or re-download. Iterate a design without losing the earlier takes.
Real parts, real prompts.
Each of these started as one line of text. Drag to orbit any of them.
Three steps. One file.
No CAD skills required. The whole path from idea to downloadable part.
Describe it
Type the part in plain language — dimensions, features, tolerances, whatever you know. The more specific, the better the result.
Cadfai builds it
The model is generated as real, parametric CAD geometry — precise solids with true dimensions, built to your description.
Inspect & download
Rotate it in 3D, confirm it's right, and export STEP or STL. Straight into your CAD, CAM, or slicer.
Start free.
Scale when you ship.
Simple plans while we're in early access. Early users lock in founding pricing.
To try it out
- 10 free prompts
- STEP & STL export
- In-browser 3D viewer
- Your history
Pay as you go
- 10 prompts per pack
- No subscription
- Buy anytime you run out
- Prompts never expire
For regular use
- Generous monthly prompts
- Priority generation
- Full download history
- Early access to new features
- Cancel anytime
Start making parts
Describe a part, get a real CAD file in seconds. Sign up and jump in.
Contact us
Questions, feedback, or running into an issue? We’re happy to help — just send us a note.
Generators for common parts
Jump straight to a part type, or view all generators →