25 Apr
2011
25 Apr
'11
4:22 p.m.
On Mon, Apr 25, 2011 at 8:44 AM, Pete Turnbull <pete at dunnington.plus.com> wrote:
On 25/04/2011 04:37, Vincent Slyngstad wrote:
Here's what I got from two original XX2247 keys...
The cut depths, clockwise from the first position, looking into the open
end with the key at the "twelve 0'clock" position are:
Key 1 ? ? ? ? ? Key 1 ? ? ? ? ? Key 2 ? ? ? ? ? Key 2
0.0770" ? ? ? ? 1.94mm ? ? ? ? ?0.0785" ? ? ? ? 1.95mm
0.0150" ? ? ? ? 0.37mm ? ? ? ? ?0.0155" ? ? ? ? 0.39mm
0.1055" ? ? ? ? 2.68mm ? ? ? ? ?0.1070" ? ? ? ? 2.72mm
0.0435" ? ? ? ? 1.13mm ? ? ? ? ?0.0455" ? ? ? ? 1.13mm
0.1075" ? ? ? ? 2.72mm ? ? ? ? ?0.1085" ? ? ? ? 2.74mm
0.0780" ? ? ? ? 1.96mm ? ? ? ? ?0.0785" ? ? ? ? 1.98mm
0.1075" ? ? ? ? 2.72mm ? ? ? ? ?0.1095" ? ? ? ? 2.77mm
.
.
.
I'm not quite sure what this says about cutting
tolerances or what multiple
the depths of cut are.
Not sure about tolerances (my brother is a locksmith but I'm not), but
according to...
http://www.locksafesystems.com/depth_and_space.htm#Chicago_Tubular_Space_an…
The depths by number are:
1 - 0.0155"
2 - 0.0310"
3 - 0.0465"
4 - 0.0620"
5 - 0.0775"
6 - 0.093"
7 - 0.1085"
8 - 0.1240"
Meaning that the XX2247 key would have depths (in the order you
describe) of 5-1-7-3-7-5-7
A locksmith set up for ACE cutting would have the code book to convert
the serial number into the depth sequence, so the number on the key is
the important datum. Knowing the numeric depths is handy when you are
pinning a lock so you know which bin to pull pins from.
-ethan