(registered 2017-05-12, last updated 2017-05-12) Type name: model Subtype name: 3mf Required parameters: N/A Optional parameters: N/A Encoding considerations: binary Security considerations: 3MF files can be very large, particularly after decompression, which could fill a filesystem and cause a denial of service or system failure. This media type does not employ any sort of active or executable content, nor does it provide direct control of device settings or safety interlocks. Neither privacy nor integrity protection is provided by the media type itself; if these protections are needed they must be implemented externally. Authentication, access control, and privacy/integrity are normally handled by the Internet Printing Protocol, Hyper-Text Transport Protocol, and Transport Layer Security. 3MF files utilize a ZIP container to embed multiple types of files. The security considerations for the deflate compression format used in ZIP files are described in section 6 of "DEFLATE Compressed Data Format Specification version 1.3" [RFC1951]. The security considerations for embedded XML content are described in section 10 of "XML Media Types" [RFC7303]. Each XML namespace utilized may raise additional security considerations. The security considerations for embedded PNG image content are described in section 8.5 of "PNG: Portable Network Graphics" [RFC2083]. Interoperability considerations: Published specification: http://www.3mf.io/specification/ Applications that use this media type: 3D modeling and slicing software Fragment identifier considerations: Additional information: Deprecated alias names for this type: N/A Magic number(s): N/A File extension(s): 3mf Macintosh file type code(s): N/A Person & email address to contact for further information: Michael Sweet Intended usage: COMMON Restrictions on usage: N/A Author: The Printer Working Group, c/o The IEEE Industry Standards and Technology Organization, 445 Hoes Lane, Piscataway, NJ 08854, USA Change controller: 3MF Consortium, 401 Edgewater Place, Suite 600, Wakefield, MA 01880 Provisional registration? (standards tree only): No