tera4d2 of 10. Step 1. After the installation of Tetra4D Converter, start Acrobat. Step 2. Click on Tools in the main Acrobat toolbar to access to the Acrobat features and to the installed Add -onsTetra4D® Converter . The world’s leading solution for converting. native 3D CAD data into rich 3D PDF documents. Tetra4D Converter is the world’s leading solution for converting native 3D