Scientists drill holes smaller than a human hair
Scientists at Cardiff University have created machinery to drill holes as small as 22 microns across, smaller than a human hair.
The drilling is done through an electro-discharge.
The “drilling” is done with a minute electrode, which has a diameter of only 6 microns (0.006 mm).
Mr Marsh said: “You don’t use a drill at all… The electrode is an electric discharge that wears away the metal, but it produces a very regular hole which is tubular - unlike lasers which have a large external entry point.”
This new technology will be used to improve medical and electronic engineering.
