Help with Animation

Hi,

In the attached file I am trying to create an animation of theextrusion process.Basically, the billet is forced through adie/mould to create an extruded aluminium product.Is there a way ofreducing the size of the billet as the extruded product comes outthe die/mould?Any help would be greatly appreciated.

Thank You

Feroz Mahomed
Sw2006 sp5.0SolidworksMotion Studies