Here is a quick set of commands to add a surface to an existing solid part. We will start with a simple 6X10X1 inch box:
In Inventor 2019 Part files, there is an “Annotate” tab where you can add Model Based Definitions. The commands include Leaders, Hole Notes, Feature Control Frames, Surface Texture Symbols that can be placed in any 3D view.
When Inventor first came out, I always used to choose the “Constraint” command to assemble my parts. Now with the newer Inventor versions, I tend to use the “Joint” command. When you use the “Joint” command, remember to select the free floating model first. Here is an example of quickly centering one part on top of another part. I use the “Rigid” joint and hover over the center point of a face.