In 2000 he attempted to walk solo and unsupported to the North Pole. The expedition failed when his sleds fell through weak ice and Fiennes was forced to pull them out by hand. He sustained severe frostbite to the tips of all the fingers on his left hand, forcing him to abandon the attempt. On returning home, his surgeon insisted the necrotic fingertips be retained for several months before amputation, to allow regrowth of the remaining healthy tissue. Impatient at the pain the dying fingertips caused, Fiennes cut them off himself with an electric fretsaw, just above where the blood and the soreness was.