THE DRILL WILL SHARPEN

DRILL WILL SHARPEN THEThere are special devices for sharpening dull or broken drill bits If they are not at hand then try under a rotating drill bit set suitable abrasive (e.g. abrasive wheel) at an angle of 30 or 45 degrees — and the drill will self-sharpening.

Recommend to read

  • YOUR E-PSYCHOLOGISTYOUR E-PSYCHOLOGIST
    A set of electronic devices that use psychologists is constantly expanding. In addition to the "Polygraph" (the"lie detector"), there are other devices to test the emotional state of...
  • FIGHTER TANKS “CENTAUR”FIGHTER TANKS “CENTAUR”
    In the 1980s, the Italian army had developed tactical and technical requirements for prospective family of tracked and wheeled armored combat vehicles that were planned to start...