by raimundo » 17 Nov 2009 9:35
I think that the spike will be bent from straight by any brute force type person who may try to insert the wrong key, and after it moves far enough, it may be impossible to insert the proper key.
Unless the drawing shows the spike longer than it is, this kind of ward should be made short to make the possibility of it being bent by something shoved in from the front of the keyway, every bit of its length is leverage when force is applied laterally, so shorter offers less leverage to the distructive force.
Wake up and smell the Kafka!!!