How to Change Drill Bits on Benchtop Drills

Benchtop drills are a convenient tool for making precise, repetitive holes in material. Most benchtop drills include stops, guides and index marks that allow the user to create holes of the same size, depth and angle as many times as necessary. With a large rotating handle controlling the plunge of the bit, the user has more leverage for drilling through tough material. Changing drill bits in a benchtop drill is easy and requires only a chuck key.

Chuck key

Instructions

- 1
  Unplug the benchtop drill to prevent accidental activation while changing the bit.
- 2
  Insert the nub on the chuck key into one of the holes under the serrated collar on the chuck, aligning the teeth on the chuck key with the serrated teeth on the collar.
- 3
  Turn the chuck key counterclockwise to open the chuck jaws and release the drill bit. Remove the drill bit.
- 4
  Insert the smooth end of the replacement drill bit into the chuck jaws. Hold the drill bit in the center of the jaws.
- 5
  Turn the chuck key clockwise until the drill bit is firmly held in the chuck jaws. Turn the chuck another 1/4 turn clockwise. Plug the benchtop drill back in.

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