AI-powered CAD for real parts.

Turn an engineering drawing into a STEP model, or describe a part in plain English.

  • Fully automated by AI
  • No CAD skills
  • No download
  • Any device

Watch a scanned print become a checked STEP file. Upload, AI reads every dimension, builds the model, checks every feature, you download the part and the quality report.

Drawing to CAD

Have a drawing?
Get the 3D model.

Upload a PDF or image of a 2D print. AI reads every view and dimension, builds the solid, and checks it back against your drawing. STEP + STL + quality report, in minutes.

  • Fully automated
  • Free check first
  • Quality report
  • No subscription
Convert a drawingPay per part. No subscription.
Text to CAD

No drawing?
Describe it.

Say what you need in plain English. The Studio turns it into real parametric geometry you can keep refining by chat, then exports STEP, STL, 3MF or GLB.

  • Exact dimensions, mm or inches
  • Knows standard hardware
  • Phone, tablet or desktop
Generate a partFree trial credits

Just need to open or convert a file? Free 3D viewer & converter → STEP, STL, OBJ, IGES, DXF, GLB. Sign up (free) to download.

Drawing to CAD

Have the drawing but not the model?

Upload a PDF or image of an engineering drawing. AI reads every view and dimension, builds a solid 3D model, and checks it back against your drawing. You get STEP and STL files, plus a quality report.

Free check first. Nothing charged until you say go.

What you get
  • STEP file
  • STL file
  • Quality report
  • Preview in our viewer
Convert a drawingHow it works

A whole drawer of prints? Volume pricing for shops and teams →

Text to CAD

Describe a part in plain English

No drawing? Stop wrestling with CAD menus and just say what you need. PartWork's AI understands dimensions, standard hardware and manufacturing constraints, and keeps refining the part as you talk.

Example prompt:
"Create a 4x3x1 inch mounting bracket with four M4 countersunk holes in the corners"
  • Exact dimensions, mm or inches
  • Knows standard hardware
  • Real STEP solids, not meshes
  • Remembers context
Generate a partFree trial credits to start.

True parametric CAD geometry

Whether it came from a drawing or a sentence, you get real B-rep solid geometry with precise dimensions, ready for CNC machining and 3D printing.

Exact dimensions

"50.5mm" means exactly 50.5mm, not an approximation. Tolerances you can trust for real manufacturing.

Real solid models

Industry-standard B-rep geometry, not polygonal meshes. Export STEP and open it in any CAD package with full editability.

Opens in your CAD

Fusion 360, SolidWorks, Onshape, FreeCAD, or any instant-quote service. STEP in, STL and 3MF for your slicer.

Four ways to get to a part

All in your browser, on any device.

Convert a drawing

PDF or image of a 2D print → STEP + STL, checked against the drawing.

Free check first

Describe a part

Plain-English prompt → manufacturable solid geometry in the Studio.

Free trial credits

View any file

STEP, STL, OBJ, IGES, BREP, DXF or GLB. Orbit, zoom, inspect on phone or desktop.

Free

Convert formats

STEP ⇄ STL, 3MF, GLB. View free; sign up (free) to download.

Free to view

Why PartWork.ai?

See how we compare to traditional CAD.

Traditional CAD
PartWork
✕Desktop-only software
✓Works on phone, tablet & desktop
✕Steep learning curve
✓No CAD experience needed
✕Redraw a print by hand
✓Upload the drawing, get the model
✕Expensive monthly licenses
✓Pay per part, no subscription
Developer API

Build with PartWork

Generate STEP and mesh files from text prompts, or submit drawings for conversion, from your own application via a simple REST API.

View Developer Docs

Frequently asked questions

How does converting a drawing work?

Four steps, all by email and in your browser:

  1. Upload. Click Convert a drawing, enter your email and drop in a PDF or image of your drawing. A free check confirms we can build the part.
  2. Preview. When your part is ready, we email you a link to its preview page: the 3D model to look around, and a quality report checking every dimension against your drawing.
  3. Buy. If the model is right, click Buy this 3D Model. Your price is on the button: one payment, secure checkout, no subscription.
  4. Download. A second email links to your download page: the STEP file in millimetres and inches, the STL, and the quality report as a PDF. Your files stay available for 12 months.

Do I see the 3D model before I pay?

Yes. The preview page shows the 3D model and the quality report first. Nothing is charged until you choose to buy.

How do you check the model against my drawing?

Every view on your drawing is compared with the same view of the model, and every dimension is checked. The quality report shows the result on your preview page. If the drawing leaves something out, our AI will reach out and ask you.

Which drawings can you convert?

Any drawing of a single part, as a PDF (2 pages max), JPG or PNG up to 10 MB. Old prints, scans and photos work if the views and dimensions are legible. Assemblies, freeform surfaces and drawings with missing views are not supported yet; the free check tells you before you pay.

Are my drawings kept private?

Yes. Your drawing is never used to train AI and never sold, and it is deleted after 90 days, or sooner if you ask.

See all questions →

Ready to make your part?

Bring a drawing, or bring an idea. Either way you leave with a real STEP file.

Convert a drawingOpen the Studio

Drawings: free check first, pay per part. Studio: free to upload & view, sign up (free) to download, free trial credits to generate.