Inside view of the shell form which shows the additional patches used to fill in the gaps between the two major shapes.  Since I'm tig welding everything, it isn't essential to have a tight fit up  as it is when brazing this material.  I can easily make a general shape, put it together then cut and form the additional pieces to fit.  Whatever gaps exist are easily filled in with the welding rod. At this point, there is enough open space allowing me to continue refining the shape over forming stakes.  Before doing that, however, I must grind off the welds that have come through the underside of the piece.  Otherwise the work isn't going to fit properly over the stakes. I sometimes think I should have a little hinged door or a cut out window somewhere on these hollow formed pieces I do.  As often as not the inside of the piece is even more interesting than the outside and it's a shame not to be able to see that.