Eritrean Engineer Invented a Square Hole Cutter

Engineer Michael Sebhatu invent a device that makes square holes in seconds. By Jonathan Margolis | for Financial Times, We learnt last week that Buckingham Palace needs rewiring, and its 6,500 plug sockets and 5,000 light fittings replacing, as part of a £369m refurbishment. Immense as the job sounds, electricians would regard such a contract […]

Continue Reading