I use a lot of Cad models I find or make, and I import it into blender to animate. I have always used .STL and then when in Blender I select every triangle and vertex so I can add materials and textures to certain parts. I am wondering If there is someway to import Cad models into Blender and all the parts are already separated so I don't have to select every vertex? This would save me tons of time. Thanks
Press P and choose by Loose Parts. That creates a separate object for each group of connected vertices.