Buy now (USA) ► Buy now (EU) ► Buy now (UK & World) ► Further information ▼ In this composites training video, we demonstrate how low-melting point metal alloys can be used as sacrificial cores/mandrels when manufacturing hollow composite structures. The process can be used to produce complex hollow structures, such as tubes or frame components by laminating prepreg carbon fibre around a cast metal mandrel, which is then cured at elevated temperature before the temperature is increased further to melt-out the metal core, leaving the hollow composite structure. For full details on the products used, as well as a step-by-step breakdown of the process, see the project page on the Easy Composites website: Full Project Details USA ► EU ► UK & World ► 00:00 Introduction 02:23 Making The Pattern 03:05 Setting up Barriers for the Silicone Mould 06:03 Pouring the Silicone Moulds 07:52 Casting the Low-Melt Metal Mandrels 13:37 Laminating the Components 16:52 Curing the Prepreg 19:04 Melting Out the Metal Mandrel/Core 20:15 Finishing Work