Billet Mould systems are designed and supplied in AirCAST Air Cushioned Moulds and traditional hot-top moulds for the production of extrusion billet. The o.d.t. AirCAST aluminium billet mould produces extrusion billet that is of high quality both inside and out. o.d.t. Engineering is able to supply a wide range of mould technology systems to suit the casting of aluminium billets, rolling ingots and T-bar.