2018 ALUMINUM EXTRUSION DESIGN COMPETITION - CALL FOR ENTRIES. We are pleased to announce that Bonnell Aluminum is the official sponsor of the 2018 Student & Professional International Aluminum Extrusion Design Competitions, advancing aluminum extrusion education. Organized by the ET Foundation and the Aluminum Extruders Council, the Aluminum Extrusion Design Competition is intended to enlighten students and engineering, design, and architecture professionals about aluminum extrusions superior advantages and many applications. Show off your talent, ingenuity and creativity by designing components, systems and/or products that feature aluminum extrusions. To learn more about the 2018 Student & Professional International Aluminum Extrusion Design Competitions, please visit ETFdesign.org.