What are the tools of the blade trade?

THE WIND INDUSTRY'S RACE TO INCREASE THE POWER GENERATED BY EACH TURBINE IS LEADING TO A VAST INCREASE IN THE SIZE AND SCALE OF BLADES BEING BUILT. THIS CREATES MAJOR MANUFACTURING CHALLENGES FOR THE COMPANIES CHARGED WITH BUILDING THEM. GEORGE MARSH GIVES AN OVERVIEW OF SOME OF THE TOOLING REQUIRED TO PRODUCE TODAY'S INCREASINGLY ENORMOUS WIND TURBINE BLADES.