Hi, I am new to Character Creator (and 3D modeling), and my question is - How do I merge all of my layers (not sure if this is proper term) of my character into 1 solid object? is this something i need to do in another application, or can i do this in Character Creator?

Once I am done with my avatar, accessories, posing, etc, is there a way to merge, join or close all open meshes to create 1 solid, "watertight" object? The end result an OBJ or STL that I can 3D print.

I don't know what the proper terminology of this action would be.  Any help is greatly appreciated.  Thank you!