with all the parts printed for the first stage, the fun begins and that is building up the Saturn.
I started with the base on which the engines will be mounted ( later ) and from where the body parts are built up.
First advice if you ever want to build this Saturn is NOT to mount the engines to the base bottom platform. its not handy when you build up the parts with the engines already mounted, they can only break in the building process..

In the pics you see the first part of stage 1 with the smaller fuel tank installed.

More to come..
Marco