casting

The Use of Metal Moulds to Cast Lead Weights onto the Wooden Shaft of a Plumbata

David Sim (UK)
Plumbata - Plural plumbatae. a projectile weapon used during the latter part of the Roman period – a fletched dart. They usually consisted of a barbed iron head with a lead weight fitted to a fletched wooden shaft. Plumbatae have been found on several sites in Britain and abroad and written evidence for their existence has been reported in the fourth century by Vegitius...

Anatomy of Prehispanic Bells - Study of an Ancient Lost Process

Raúl Ybarra (MX)

The elaboration of bells in the Prehispanic Era was of great importance due to the special meaning attributed to them in religious ceremonies. Today, knowledge of the techniques that were used in their fabrication is scant and lacking in detail. For that reason, the objective of the present study was to carry out a morphological study of bells from western Mexico...