Drilling out cylinders.

When the locksmith encounters a lock he cannot pick he has to resort to destructive drilling.

Use a 3/16 hss bit, drill as square to the cylinder as possible, apply an even pressure. As the bit drills in to the cylinder it will meet the pins and tend to jolt. Drill to the depth of the key, remove drill and turn key way with a screw driver. If it fails to operate drill again with a little larger bit.This also works with euro cylinders and oval cylinders but remember that they are upside down so drill below the keyway.

euro cylinder