# 3D scanning and CNC milling in jewelry

> 3D scanning digitizes an existing piece and CNC milling carves wax or metal models with precision; tools of the digital jewelry workshop.

- Source: https://www.711grados.com/en/3d-scanning-and-cnc-milling/
- Language: en
- Note: This entry was drafted with the help of AI and is pending review by the author.
- Published: 2026-09-08
- Updated: 2026-09-08
- Translation (es): https://www.711grados.com/es/escaneo-3d-y-fresado-cnc/
- Author: Sandra Sánchez
- Site: 711 Grados (https://www.711grados.com/)

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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](https://www.711grados.com/media/diagrams/escaneo-cnc-steps.en.svg "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

- [3D printing in jewelry](https://www.711grados.com/en/3d-printing-in-jewelry/)
- [Wax carving and modeling](https://www.711grados.com/en/wax-carving-and-modeling/)
- [CAD software](https://www.711grados.com/en/cad-software-for-jewelry-design/)