Crease Download for Mac

Free · Open source · For Mac

Design in
plain words.

Crease is a 3D design app for your Mac. An AI designer models what you describe, checks every part, and changes it whenever you ask.

Download for Mac See fifteen demos
A black 3D-printed pot with a twisted surface, sitting in a red saucer with a wavy rim on a sunny windowsill

From a sentence
to the real thing.

You make every decision. The designer does the modelling.

  1. Typing to the designer in Crease: a plant pot for my windowsill, black, with a twist, and a red saucer with a wavy rim

    01

    Describe it

    Say what you want, the way you'd say it. Add a photo if it helps.

  2. The twisted pot in its red saucer as a 3D model, with nine checks passed: solid, fits on the printer, sits flat, overhangs, thin walls and more

    02

    It designs

    A model from every side, checked: solid, thin walls, overhangs, moving parts.

  3. 03

    Change anything

    “Make it black.” “Round knobs instead.” Its questions come with a recommended answer.

  4. The print dialog in Crease with the print time, the filament and a box to tick: the bed is clear

    04

    Make it real

    Export STL or 3MF, or send it to your printer after one approval.

One design,
start to finish.

A sculpted dragon pen holder: questions, a change of mind, a fix for the thin spots, the code, every version, and light mode.

Fifteen things,
fifteen sentences.

Each one recorded in the app, from the first sentence to the finished model, sped up.

“Make me a dragon for my desk, curled up around a hole that holds my pens. Black with red eyes and a red belly.”

Designed by Claude · Sculpted in Blender · fixes its own thin spots · code · versions · light and dark

Designed
in Crease.

Pots, hooks, boxes, name tags, figures. Parts are drawn in OpenSCAD, sculpted figures in Blender.

A low-poly bear printed in black PLA, standing on a base shaped like California, a palm tree outside the window
Low-poly bearSculpted figure · PLA
A yellow box with a red hinged lid, as a 3D model in Crease
Box with a hinged lid
A blue phone stand, as a 3D model in Crease
Phone stand
A red wall hook, as a 3D model in Crease
Wall hook

Or anything you can describe.

Start from a blank page or a starter: a box, a hook, a phone stand, a name tag, a plant pot, a desk organiser, a cable clip.

A black dragon curled around a pen hole, with red eyes, a red scaled belly, wings and horns
Dragon pen holderSculpted · two colours
A black ring gear with white planet gears and a blue knob in the middle
Planetary gearsFour parts · they turn
A white bell-shaped lampshade made of twisting spiral slats
Spiral lampshadeOne part · no supports
A black chess knight with a braided mane on a turned base
Chess knightSculpted
An orange pumpkin-shaped box with a hinged lid and a stem
Jack-o'-lantern boxHinged lid
A white cat-face box whose lid is the head, with ears, whiskers and closed smiling eyes
Cat jewellery boxHinged lid
A black case with a white vented lid and openings for the ports
Raspberry Pi caseSnap-on lid
A white tray of six round cups on a black turntable base
Spinning spice rackTurns on a printed bearing
Blue and black gears on a white stand with a crank
Crank gear toyGears turn together
A desk organiser with blue pen cups, a white drawer case and a black phone stand
Desk organiserNine parts
A black bat-shaped clip with purple wings
Bat chip clipPrinted spring
A small white ghost on a coiled spring over a black base
Wobbly ghostPrinted spring
The desk organiser's assembly guide, step by step: press on the pen cups and rail, screw in the knob, slide in the drawer

More than one part?

Crease writes the assembly guide too: a parts list, an exploded view, and steps you click through.

  • Live sliders

    Drag a size or count. The model updates as you go.

  • Code view

    Every design is plain OpenSCAD, there to read and edit.

  • Versions

    Every change is kept. Compare any two, or go back.

  • Export

    STL or 3MF, or a build pack with every file.

  • Print

    Slice and send to a Klipper printer. Each colour gets its own filament slot.

Bring your
own designer.

The designer is an AI you already use. Sign in with your plan or add an API key. That service bills you for what it uses; on Claude a simple part costs cents.

  • ClaudeYour Claude plan or an Anthropic API key
  • CodexYour ChatGPT plan or an OpenAI API key
  • GrokYour Grok account or an xAI API key

What you need

The setup screen checks each piece and tells you how to fix what's missing.

  1. 01

    A Mac

    Apple silicon, macOS 12 or later.

  2. 02

    A designer account

    Claude, Codex or Grok. Plus OpenSCAD and OrcaSlicer, both free.

  3. 03

    A printer, if you like

    Klipper printers print straight from Crease. For others, export the file. No printer? Use the practice printer.

Questions

Is it free?

Yes. Crease is open source under the Apache 2.0 licence. The designer runs on your own Claude, Codex or Grok account, and that service bills you for what it uses.

Do I need to know CAD?

No. You describe the part and answer a few questions. Every design is also plain OpenSCAD code, there to edit if you want to.

Which printers work?

Printers running Klipper with Moonraker. One is verified on real prints so far, a Creality SPARKX i7. For Bambu, Prusa and others, save the print file and print it your way.

Can it print without asking me?

No. Every print waits for you to tick “The bed is clear” and press Print. The designer works in a sandbox with no network access.

Where do my designs go?

Into a Crease folder on your Mac, as plain files with their own version history. A build exports as one .zip you can open on another Mac.

Is it finished?

Not yet. Crease is alpha, built by one person with a team of coding agents. Expect rough edges, and please report them.

What will you
make first?

Free for Mac. Bring a designer account. A printer is optional.

Download for Mac View on GitHub