Fitting hinge bolts

Even when you have fitted strong locks to the closing edge of the door, it is still possible to lever the door off its hinges. Foil the most determined of intruders with a pair of special hinge bolts set into the edge of the door.

Mark and drill holes for the bolts in the centre of the door edge. Use the bolts to mark their positions on the doorframe.

Mark out the recesses for the locking plates and drill and chisel out the waste to set them flush. Screw the plates to the frame.