Put on safety goggles.
Turn on the bench grinder and set it to a medium speed level. Stay at arm's length from the machine once it begins to grind.
Use pliers to hold the smooth bottom part of the drill bit. You will be sharpening the top part.
Lightly press the top cutting edge of the drill bit parallel to the spinning wheel using a downward clockwise motion, and remove it after one second.
Wait a few seconds and grind again. The grinding should be done in intervals, separated by a few seconds each time, to avoid overheating the metal.
Stop using the bench grinder when the drill bit looks visibly sharpened.
Adjust the insert (hole) on the drill bit sharpener to fit your drill bit.
Put on your safety goggles.
Turn on the drill bit sharpener.
Press the drill bit into the insert. In a second or two the drill bit will be sharpened.