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3D scanning and CNC milling in jewelry

· 1 min read · Techniques

Illustration: 3D scanning and CNC milling in jewelry

Besides printing, two digital technologies are very useful: 3D scanning, which turns a real object into a digital model, and CNC milling, which carves a block with a computer-guided cutter.

Steps of the technique: Scan, Clean the model, Prepare the milling, Mill, Check, Finish
Summary of the steps

3D scanning #

A structured-light or laser scanner measures the shape of a piece of jewelry or a natural object and generates a model that can be edited, scaled or reproduced.

CNC milling #

A milling machine carves a block of wax (the most common use in jewelry) or metal, following a digital file. 4- and 5-axis machines allow complex forms.

What it is for #

Reproducing an antique piece, scaling a design, engraving or making series with precision.

Workflow #

Scanning, editing on the computer, milling, casting.

Step by step #

  1. Scan. Digitize the object or piece.
  2. Clean the model. Fix the mesh.
  3. Prepare the milling. Choose tools and toolpaths.
  4. Mill. The machine cuts wax or metal.
  5. Check. Compare with the model.
  6. Finish. Polish by hand.

Tools and materials #

  • 3D scanner
  • CAD/CAM software
  • CNC milling machine
  • Wax or metal blocks

Common mistakes #

  • Scanning shiny objects without matting spray.
  • Toolpaths too deep.
  • Worn cutters.
  • Not securing the block well.

See also #

This entry was drafted with the help of AI and is pending review by the author.