TALAT Lecture Aluminium Extrusion To develop a good extrusion design, the following key characteristics should be addressed: Specify the appropriate metal thickness Keep metal thickness as uniform as. RAM. alu. Smooth transitions. The revised Aluminum Extrusion Manual version features new and previously unpublished content as well as expanded and updated information Aluminum Extrusion Manual by the Aluminum Extruders Council (AEC) contains several examples. The Aluminum Extruders Council has upd