On Tue, 26 Nov 2019, jim stephens via cctalk wrote:
I posted on the discord channel looking for information on measuring the keys
(ACE cylinder locks) for duplication.
I'm including a quote from a post by Jay on the subject. I need to get the
information on measuring the depths of the cuts, as the postings I've found
don't mention how the depths are measured for each value.
With a depth mike (or improvise) laid across the face of the key, measure
how deep the cylinder "section" cut is.
There is nothing stopping a manufacturer from using different depths
and/or different nomenclature (for instance, Schlage and Kwikset house
keys have different depths, and different numberings)
Besides depth, there are a couple of differnt spacings (7 V 8 cuts?), and
even different center peg diameters (hence the cheap pick tools on e-Bay
have 3 variations 7.2mm, 7.5 and 7.8)
But, fortunately, most follow the leader.
In SOME localities, code cutting is severely restricted, and sometimes
requires that you provide proof of ownership of the lock (physically bring
it in and/or formal request on your letterhead)
If you have the lock in hand, many locksmiths will ignore the DND,
assuming thet YOU are the one placing that there.
'course some will duplicate a key with a piece of tape over the DND!
The numbers stamped on the key rarely correspond algorithmically to the
depths. Instead, they are a pseudo-random identification of the key, and
a well equipped locksmith can look those up in a "Code Book" to get the
depths that are required.
For example, XX2247 is one of the most common for minicomputers.
There are also "Depgh And Space" books that identify the distance between
cuts, and what depth distance corresponds to what depth number. But, here
is THAT information:
On Mon, 25 Apr 2011, Ethan Dicks wrote:
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_and
_Depth
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"
--
Grumpy Ol' Fred ci...@xenosoft.com
