The aim of this paper is to present the conservation treatment of a set of iron weapons from the Vaccean necropolis of the Ruedas de Pintia (Padilla de Duero, Valladolid) dated between the 4th century BCE and 2nd century CE. The cremation and burial conditions have been very detrimental to their state of conservation, generating an intense corrosion and their complete mineralization. This left the weapons in a very fragile and brittle state that made their restoration difficult, since it implied the removal of hard crusts that were much adhered to the surface and, during this process, the pieces were in danger of further fragmentation. Our proposal is the combined use of traditional abrasive cleaning techniques together with the 1064nm Nd:YAG laser cleaning that, in addition to removing corrosion products, transforms the surface into magnetite, a stable iron oxide.