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How to pull a 3D model apart by hand with Barehands

Drop a 3D model into the media folder and scrub its exploded view with your fingers.

Who it is forAn engineer, product designer, or hobbyist who wants to look at how a 3D model is assembled and does not want to use a mouse in a 3D viewer.

The problemRotating and separating parts of a 3D model in a standard viewer takes precise mouse work and makes it hard to show the structure to others.

The outcomeThe model floats on the board, you can rotate it by holding still while carrying it, and an empty pinch dragged sideways pulls its parts apart into an exploded view.

What you need first

  • A webcam
  • Google Chrome
  • Python 3 (on Windows, run.bat finds a working interpreter)
  • An internet connection on first run, because the page loads MediaPipe and three.js from CDNs

Steps

  1. Run git clone https://github.com/jaredrhod/barehands and then cd barehands.
  2. Copy your 3D model file into the media/models/ folder.
  3. Start the app with python3 server.py and open http://127.0.0.1:8794/stage.html in Chrome.
  4. Tap the ring, tap the Props orb, and open your model.
  5. Hold still while carrying the model to rotate it, and drag an empty pinch sideways to scrub the exploded view.

Prompt for your agent

In the barehands repo, copy <model file> into media/models/ and confirm it appears in the Props orb after the server starts. Expected output is a list showing the model file in that folder. Verify that the file is inside media/ because only files there appear on the board.

Caveat. The README says only files inside media/ can appear on the board, so a model stored anywhere else will not show up.

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