SpinFire Ultimate 11.7.0 adds a Permissions setting in the Export 3D PDF dialog. Permissions allows the user to control what a PDF user can do.

Export Permissions

Permission	Description
All	All permissions are active.
Open	User can open and decrypt the document.
Secure	User can change the document security settings.
User	All permissions are active except Open and Secure.
Print	User can print the document.
Edit	User can edit/modify text notes.
Copy	User can copy information from the document.
Edit Notes	User can add, modify, and delete text notes.
Save As	User can perform a "Save As..." operation.
Fill and Sign	User can fill or sign existing forms or signature fields.
Accessible	The Accessibility API is enabled.
Assembly	User can insert, delete, and rotate a pages, create bookmarks and thumbnails.
High Quality Print	User can produce high quality prints.
Owner	All operations are permitted.
Form Submit	Allows users to submit forms outside the browser.
Spawn Template	User can spawn template pages.

Effects Acrobat Reader

When opening exported PDF files in Acrobat, you can see some of the effects the export permissions provide.

Some are obvious such as the Print permission where you are able to use that functionality or not in Acrobat.

For others you can view Acrobat's security settings. Below shows All permissions enabled.

Open a 3D model.
From the Menu bar (see The SpinFire Ultimate User Interface), select File > Export > 3D PDF.
Change the settings specific to the CAD format exporting to.
Click Export.