.amf — Additive Manufacturing File Format
3D AMF Consortium · 2009
AMF is an XML-based open standard for exchanging 3D printable data, supporting color, materials, and complex geometry for additive manufacturing.
Key Features
- XML-based open standard for 3D printing data exchange.
- Supports color, materials, and multiple objects within a single file.
- Can describe complex geometry including curves and internal structures.
- Includes metadata and author information for better context.
Best For
- 3D models requiring color and material definitions.
- Additive manufacturing processes needing detailed object information.
- Sharing multi-part or multi-material 3D designs.
- Open-standard compatibility for 3D printing workflows.
Less Ideal For
- Simple 3D geometry where color/material isn't critical (STL is often simpler).
- Real-time 3D rendering or game development (formats like FBX or glTF are better).
- Web-based 3D model viewing (glTF is dominant here).
- Extremely complex, high-polygon meshes that might benefit from more specialized formats.
Common Use Cases
- Transmitting 3D model data to 3D printers.
- Sharing complex 3D designs with collaborators.
- Archiving 3D printable models with detailed specifications.
- Integrating 3D model data with manufacturing workflows.
How to Open It
- Use specialized 3D modeling software that supports AMF import (e.g., Blender).
- Open with dedicated additive manufacturing slicer software like Ultimaker Cura or Simplify3D.
- Some CAD programs may offer AMF import/export capabilities.
- As an XML file, it can be opened in any text editor, but this is primarily for viewing structure, not the 3D model itself.
What is a .amf file?
The Additive Manufacturing File Format (AMF) is an XML-based standard designed to facilitate the exchange of 3D printable data. It aims to improve upon the limitations of STL by supporting color, materials, and internal structures within a single file. AMF provides a comprehensive way to describe complex 3D models for additive manufacturing processes. This format is intended to be a universal standard, allowing for richer information beyond just geometry. It can include metadata, author information, and metadata about the materials used.
Programs That Open .amf Files
| Platform | Program | ||
|---|---|---|---|
| Windows | Blender | Free | |
| Ultimaker Cura | Free | ||
| macOS | Blender | Free | |
| Ultimaker Cura | Free | ||
| Linux | Blender | Free | |
| Ultimaker Cura | Free |
How to Convert .amf Files
| Format | Method |
|---|---|
| .STL | Blender, Ultimaker Cura |
| .3MF | Blender |
Common Problems with .amf Files
Frequently Asked Questions
AMF's primary advantage is its ability to store color, material properties, multiple objects, and metadata within a single file, which STL cannot do.
While AMF can represent simple models, it might be overkill. For basic geometry without color or material needs, STL is often more efficient and universally supported.
You can open and read the XML structure of an AMF file in a text editor, but this is not practical for editing the 3D geometry or properties themselves; dedicated 3D software is required.
Technical Details
AMF is an XML file format, meaning its structure is text-based and human-readable to some extent, making it extensible. It can contain multiple objects, define different materials and colors for various parts of a model, and support complex geometric representations like triangles, polygons, and curved surfaces. AMF files can also include compression for efficiency.