Moldr

Model parts with your hands and your voice. Pinch to grab a part, open your palm to orbit, speak the dimension you want, then export a printable STL.

Open the app No sign-up. Runs in Chrome or Edge, webcam optional.
Tracking active
STL  ·  MediaPipe hand-tracking  ·  Web Speech  ·  Three.js / WebGL  ·  Gemini  ·  Chrome / Edge

How it works

gesture

Hands on the model

Pinch to grab a part and move it through space; depth follows your hand as you reach toward the camera. Open your palm to orbit, hold it flat to pan, use both hands to scale and twist.

pinch → grabopen palm → orbittwo hands → scale

voice

Plain-language commands

A local grammar handles the words designers use every day. When a phrase falls outside it, a model reads your live scene and replies with edits to the parts in front of you.

"add a red box""on top of the cylinder""rotate 90 degrees"

model

Editable, then printable

Parts stay parametric. Drag a slider or speak a number and the model updates live, with undo and redo throughout. Export the whole scene or a single part as a binary STL.

live slidersundo / redoexport STL

A worked example

Moldr logs what it heard and what it changed, so the state of the model is never a guess. Here is a short session: a cylinder becomes a finished hub, by voice alone.

10:42:01youadd a cylinder

10:42:01moldrcylinder added, r 20, h 40

10:42:07youmake it sixty millimeters tall

10:42:07moldrheight set to 60 mm

10:42:14youbore a 12 mm hole through the center

10:42:15moldrhole cut, Ø12, through

10:42:22youpaint it slate blue

10:42:22moldrcolor set #5a86c2

10:42:29youexport

10:42:29moldrmoldr_scene.stl ready

Accessibility

More than a mouse

Hands and voice drive everything. The mouse stays available as a full fallback, never required.

No jargon to learn

Say bigger, on top, or turn it. The grammar covers the words beginners and experts both reach for.

Stays on your machine

Hand tracking runs in your browser. The camera feed never leaves your computer; only fallback phrases reach the model.

Model with your hands and your voice

No sign-up. Works in Chrome or Edge.

Open the app