> The tricky bit to cutting them is that when Chicago designed them, they
> developed several hundred unique curves instead of a set of numbered cut
> depths. However, manufacturers of numerical key machines have worked it
> out, probably by pretending there are a large number of cut positions.
Cut data for H2007: 45433456776, bow-to-tip. Depths and spacings to
make this work follow. You'll need a fixed font for the diagram.
De
Chicago double sided numeric cut info
|
+--------------------+ +-+
\/ \ -
============================>
/ e.g. depth 7, .308"
+-------------------------+ -
|
\_/
.016"
From shoulder, positions are:
1 .237"
2 .266"
3 .294"
4 .322"
5 .351"
6 .379"
7 .407"
8 .435"
9 .464"
10 .492"
11 .520"
Depths are from other outer side of uncut key to bottom of cut:
0 .392"
1 .380"
2 .368"
3 .356"
4 .344"
5 .332"
6 .320"
7 .308"
8 .296"
9 .284"
Width of flat at the bottom of the cut is .016" ("root")
