Formatguide
The ISO 52900 additive manufacturing format — curved triangles, color gradients, and multi-material in one XML file.
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| Extension | .amf |
|---|---|
| Full name | Additive Manufacturing Format |
| Standard | ISO 52900:2015 |
| Encoding | XML (gzip-compressed optional) |
| Open standard | Yes |
| Supports color | Yes — per-vertex and per-volume |
| Supports materials | Yes — multiple materials with gradients |
| Supports curved triangles | Yes — edge normals for curved elements |
AMF (Additive Manufacturing Format) is an ISO 52900:2015 open standard to address STL limitations for modern additive manufacturing. AMF uses XML for curved triangular elements, per-vertex color, multiple materials with volumetric composition, assemblies and measurement units.
AMF can specify different materials for different regions of a print, including material gradients.
Unlike STL, AMF stores per-vertex RGB color for full-color print files.
AMF curved triangle elements reduce the need for ultra-fine tessellation for smooth curved surfaces.
Cura, Slic3r, PrusaSlicer, Simplify3D, MakerBot Print, SolidWorks, Autodesk Inventor and 3D CAD Converter.
Commonly converted from STEP or STL for color printing, to 3MF (more widely adopted), or to STL for legacy slicer compatibility.