Mosiyana ndi zinthu kuchotsa njira, zotayidwa extrusion ndi kupanga ndondomeko.Mu extrusion, aluminiyamu yaiwisi imatenthedwa poyamba ndikuwumbidwa mu gawo lofunikira pogwiritsa ntchito nkhosa yamphongo kuti ikankhire pakufa.Aluminium extrusion imagwiritsa ntchito masheya ozungulira a aluminiyamu kapena aloyi ya aluminiyamu, yotchedwa "billets", kuti apange magawo okhala ndi mawonekedwe amitundu yosiyanasiyana komanso mawonekedwe.
Makamaka, njira yopangira aluminium extrusion imangofunika ng'anjo ndi makina osindikizira okhala ndi kufa.Kwa extrusion, billet imayamba kutenthedwa mpaka kutentha kwambiri kuti ikhale ductile.Kutentha kungakhale pafupi ndi kutentha kwa chipinda kapena kupitirira ngati kutentha kwa recrystallization.Malingana ndi kutentha kumeneku, njirayi imatchedwa kuzizira, kutentha kapena kutentha kwa extrusion.