I’m pleased to announce that the 3MF Consortium has released its first update to the 3MF Core Specification. Available for download here. Version 1.1 is the latest proof of the 3MF Consortium’s commitment to defining a 3D printing format that will allow design applications to send full-fidelity 3D models to a mix of other applications, platforms, services and printers.
First of all, what hasn’t changed. All features and structures of the core specification are retained, thereby preserving the investment made by developers. The namespace remains unchanged because this update does not break any existing parsers.
What has changed? In response to feedback from our user community, we’ve made a number of updates to clarify content, add detail, and improve support objects:
- Page 13: Restriction to absolute paths within the package. This was already true in the XSD schema, but is now reminded in the text.
- Page 15: Restricted XML content to UTF-8 to simplify parsers. We added a reminder of how XML namespace inheritance works.
- Pages 25-28: Added object type “solidsupport,” which like a model, must be manifold (hence solid). Objects of type “support” are not intended as solid objects, but as thin walls (regardless of whether they are manifold or not) to be manufactured at the machine’s precision. This ensures no ambiguity in whether support structures should be filled or not.
- Page 31: Restriction that base materials cannot form gradients, in order to ensure that splitting edges in a core-spec 3MF still results in a core-spec 3MF, rather than requiring composite materials from the materials and properties extension.
- Page 46: The only change to the XSD schema is to add “solidsupport.”
As with the core specification, Version 1.1 continues to support English and Japanese.
Thanks to all of our users and the work of our consortium members in bringing Version 1.1 together!
About the 3MF Consortium
Launched in 2015, the 3MF Consortium is a Joint Development Foundation project with the goal to define a 3D printing format that will allow design applications to send full-fidelity 3D models to a mix of other applications, platforms, services and printers. The 3MF (for 3D Manufacturing Format) specification eliminates the widespread issues with currently available file formats.
Founding members of the 3MF Consortium are: 3D Systems; Autodesk, Inc; Dassault Systèmes, SA.; FIT AG; GE Global Research; HP, Inc.; Materialise; Microsoft Corporation; Shapeways, Inc.; Siemens PLM Software; SLM Solutions Group AG; Stratasys, and Ultimaker. The starting point for the Consortium’s development of the 3MF specification was Microsoft’s donation of its 3D file format work-in-progress. More information about the 3MF Consortium and the 3MF specification is available at http://threemf.wpengine.com.
Follow 3MF on Twitter: @3MFconsortium