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What is .3mf?

Name: 3D Manufacturing Format
Extension: .3mf
Category: 3D
Developer: 3MF Consortium
Description: 3mf is an additive manufacturing XML-based file format. 3mf files hold data on color, material, and all other details that can't be stored in the STL format.
MIME Type: application/vnd.ms-package.3dmanufacturing-3dmodel+xml
Sample: sample.3mf
Wikipedia: .3mf on Wikipedia

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Last updated October 1, 2026