30 Nov
2018
30 Nov
'18
8:47 p.m.
On 11/30/2018 09:53 PM, Guy Dunphy via cctalk wrote:
How come there are 8? The lock only has 7 pins.
Those are the 8 possible DEPTHS of the grooves cut into the key.
So, that gives a possible combinations of 8 to the 7th
power, I think.
These depths correspond (with an offset) to the lengths of
the tumblers (pins) in the lock.
So, if you know what the length of a tumbler is, you can add
the offset and figure out what depth groove to cut in the key.
Jon