There are more photos from the custom class that will be in my full report... but yes, that's how the Transformers toys come out of their separate moulds, and people have to cut them up and assemble them all day long in factories.
Difficultly depends on your experience with building models, as it's the same process, except you use screws and pins instead of glue... and similarly with the painting process - some people paint the parts before construction, while others build then paint.