In January 2005, Boeing completed the first full-scale composite one-piece fuselage section for its 787 Dreamliner program, demonstrating concepts for 787 production that began in 2006. The structure, 22-feet (7-meters) long and nearly 19-feet (6-meters) wide, was the 787's first major development piece. The barrel section was built in December 2004, after several months of development work. Building the piece, which included stringers, started with computerized lay-down of composite tape on a huge mold. That mold was mounted on a tool that rotated the barrel as the tape was applied. The structure was then wrapped and placed in Boeing's autoclave for curing. The final step was unwrapping, inspection and tool removal. The team subsequently cut out windows and doors, and tested a painting process. It also ran numerous tests to verify structural integrity. The development team built seven more development pieces, representing different sections of the airplane, throughout 2005.