Are you looking to convert your PAC3 file to OBJ for 3D modeling? Here's a quick guide on how to do it. First, make sure you have the necessary software installed on your computer. You'll need a 3D modeling program such as Blender or 3ds Max, which can handle both PAC3 and OBJ file formats. Once you have the software installed, open up the PAC3 file in the 3D modeling program. From there, you can simply export the file as an OBJ format. It's that easy! Now you can use your PAC3 file in any 3D modeling software that supports OBJ files. Give it a try and see the transformation for yourself!