How It's Made S19E13 Space Pens, Reef Aquariums, Metal Caskets, Composite Bike Wheels

How It's Made Season 19 Episode 13 Online – Pressurized ink cartridges and precision ballpoint tips are assembled into pens designed to write in extreme conditions. Glass or acrylic panels, lighting and filtration equipment are combined into reef aquariums; sheet metal is formed, welded and upholstered to produce caskets; and layers of composite fibre are moulded and cured into lightweight bicycle wheels.