New technologies could slash the cost of steel production

Recasting steel A 150-year-old idea finally looks like working ALTHOUGH he is best known for developing a way to mass-produce steel, Henry Bessemer was a prolific British inventor. In the 1850s in Sheffield his converters blasted air through molten iron to burn away impurities, making steel the material of the industrial revolution. But Bessemer knew […]

On a roll: printed electronics

MAKING things with 3D printers is an idea that is being adopted by manufacturers to produce goods ranging from false teeth to jet engines. Conventional printing, though, has not remained idle. Machines that have their origins in the high-speed rotary presses that apply words and images to large reels of paper, like the ones which […]

The replicator

WHEN great designs are turned into products compromises are made. The beautifully sculpted “concept” cars that regularly appear at motor shows never get built, at least not in the form they left the design studio, because they are inevitably too difficult and expensive to engineer for mass production. For decades this has meant products have […]

Alloy angels

ONE of the great advantages of 3D printing is being able to escape the constraints of traditional production processes, and to make things with unique shapes. The powerful computer-aided design programs that are used to run 3D printers help engineers achieve this. Algorithms calculate the most efficient structure required to achieve the lightest weight and […]

Knit me a car

New materials for manufacturing Material difference Materials science is rapidly transforming the way that everything from cars to light bulbs is made, says Paul Markillie Leader here Technology Quareterly report here: