Hi Brooke, I use Acrobat DC and the 3D Comments work exactly the way that you would like them to (I think). Are you using Acrobat or Reader? What version? ... View more

JavaScript errors can sometimes cause strange behaviors as well. But there isn't much that you can do about those. What software generated the PDF? Can you share the PDF? ... View more

Acrobat doesn't automatically highlight PMI, it is generally done using JavaScript attached to the document, page or 3D annotation. Make sure that JavaScript processing is enabled. ... View more

I think the first question should be "What format file are you trying to convert to 3D PDF?" There are various ways to create a 3D PDF, but whether it requires buying an app or can be done for free depends on the source format. If you let us know the original 3D format, myself or someone else may be able to suggest a valid free workflow. ... View more

Hi, You can add default views using the "Properties" dialog in Adobe Acrobat by doing the following: 1) Activate the 3D artwork by clicking the model 2) Activate the context menu by right clicking in the 3D artwork 3) Select the "Properties" menu item.  The "Edit 3D" dialog box will appear. 4) Select the "3D" tab from the "Edit 3D dialog box 5) Select the "Add Default Views" check box and select which views you want to add 6) Save the PDF file ... View more