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AI-powered CAD in your browser

The fastest way from idea to physical part.

Describe a part in one sentence. WebCAD builds it as real CAD you can test and export.

Try it free, no install See what it builds
The bench vise CAD Genie built from that sentence: a base, a sliding front jaw and a handle screw.
PromptMake me a bench vise whose front jaw slides open and closed when the handle screw turns.
Built by CAD Genie in about 40 s · 3 parts · the jaw really slides
A bike crank arm in WebCAD with its stress test in colour, from blue for low stress to red for high.
A bike crank arm, built and stress-tested in WebCAD

CAD Genie

One sentence in, a real part out

Each model below is what CAD Genie built from the sentence under it, unedited. The sentences come from our own test set.

  • Stewart platform, Built by CAD Genie

    Stewart platform

    PromptMake me a Stewart platform: a base plate and a top plate connected by six telescoping legs with ball joints at both ends.

    26 parts

  • Six-axis robot arm, Built by CAD Genie

    Six-axis robot arm

    PromptMake me a six-axis robot arm: a rotating base, shoulder, elbow, two wrist joints, and a two-finger gripper on the end.

    8 parts · moving joints

  • Mini lathe, Built by CAD Genie

    Mini lathe

    PromptMake me a mini lathe: a bed, a headstock with a spinning chuck, a carriage that slides along the bed on a leadscrew, and a tailstock.

    5 parts · moving joints

  • Tower crane, Built by CAD Genie

    Tower crane

    PromptMake me a tower crane with a lattice mast, a jib that slews on top, a trolley that rolls along the jib, and a hook block hanging from it.

    3 parts · moving joints · built on its automatic second try

  • Bench vise, Built by CAD Genie

    Bench vise

    PromptMake me a bench vise whose front jaw slides open and closed when the handle screw turns.

    3 parts · moving joints

  • Single-cylinder engine, Built by CAD Genie

    Single-cylinder engine

    PromptMake me a single-cylinder engine cutaway: a crankshaft, a connecting rod, a piston in an open-sided cylinder, and a flywheel.

    5 parts

  • Fishing reel, Built by CAD Genie

    Fishing reel

    PromptMake me a fishing reel where turning the crank handle spins the line spool.

    3 parts · moving joints

  • Ratchet, Built by CAD Genie

    Ratchet

    PromptMake me a ratchet mechanism: a toothed wheel, a pawl that pivots to catch the teeth, and a handle.

    3 parts · moving joints

  • Butterfly valve, Built by CAD Genie

    Butterfly valve

    PromptMake me a butterfly valve: a pipe body with a disc inside that rotates with an outside handle.

    2 parts · moving joints

Pictures taken in the app. Parts with joints move: drag a slider and the mechanism follows. You can write to CAD Genie in any of WebCAD’s 11 languages.

Try your own sentence

Stress tests

Test it before you build it

Hold the part where it is held, push where it is pushed, and see where it is strained. Stress tests run in the same tab and are free on every plan.

Stress test of an aluminium bike crank arm in WebCAD: the colour scale runs from blue at the pedal end to yellow near the spindle.

A bike crank under a standing rider

1,200 N straight down on the pedal of an aluminium crank arm: about 142 MPa at the peak, about half the 276 MPa yield strength of 6061-T6.

Before · 120 gBefore and after: a solid 120 g robot forearm and a 75 g version with four slots, both coloured by stress.
After · 75 g

A robot forearm, made lighter

The same printed forearm before and after four slots along its bending axis: 120 g down to 75 g, 37% lighter, with the tip sag going from 1.61 mm to 1.74 mm.

Checked against textbook beam bending: within 1%. Results are linear and for design decisions; have safety-critical parts reviewed by a qualified engineer.

Try it free, no install

Files

Take it anywhere

Your part leaves WebCAD as a standard file, ready for your CAD tool, your slicer or your machine shop.

  • STEP for CAD and machining

    STEP is the format SolidWorks, Fusion and Onshape open, and what machine shops ask for.

  • STL for 3D printing

    Export STL for your slicer, ready to slice and print.

  • Bring your own files

    Import STEP (multi-part too), STL, OBJ and 3MF. Sketch on an imported STL and cut into it.

Export is free on every plan; sign in with a free account to download.

Pricing

Free to start

Free

CA$0

Modelling, assemblies and stress tests, STEP and STL export, and 25 CAD Genie credits a month.

Pro

CA$24.99 a month

400 CAD Genie credits a month, plus heat and airflow studies and drawings that dimension themselves.

See plans and how credits work

Who it’s for

For anyone with an idea for a physical thing

  • Makers and inventors

    Have a printer and an idea? Describe the part, adjust it, and export STL or STEP, without a CAD course first.

  • Students and teams

    Nothing to install on school or work computers. Model, assemble and test in a browser tab on Windows, Mac, Linux or iPad.

  • Engineers and startups

    Get a concept on screen fast, run a first stress check, and hand a STEP file to your main CAD tool or your shop.

WebCAD speaks 11 languages, and CAD Genie answers in yours.

More on who it’s for

Open a tab. Build something real.

No install and no credit card. Describe your first part in a sentence.

Try it free, no install