Sometimes, a project may need new file type(s) to be uploadable in the File Upload field. You may register additional file types can be added using a WordPress plugin or hook:
Example of a File Upload field accepting dwg, dxf, and stl file types
After you register a new file type in WordPress, you may then select that file type in the Breakdance File Upload field under the Allowed File Types control or leave that control blank to allow all file types to be uploaded.