Drilling a curved hole

摘要: Drilling apparatus for attachment to a rotary motor includes flexible shaft confined in an elongated tubular sheath. The sheath is formed from semi-rigid material which bendable desired curvature, at the use site select curvature of drilled hole, and rigid enough retain that use. A drilling bit fixed one end shaft, shank coacting with distal rotationally guide bit. projects proximal so both components may be secured manipulated while rotating cutting remain hole temporarily as liner passage therethrough relatively stiff wire or other filamentary member.