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Hello,

I am a new locksmith for a school district and learning things as I go and trying to clean up the mess that was left behind from before me. In learning key codes I keep coming across keys that have an "X" cut. Can someone please tell me the purpose for this cut?

the only thing I can think of is .015 half step classic
Half = Full
0 = 1
1
2 = 2
3
4 = 3
5
6 = 4
7
8 = 5
9
X = 6

Medeco 10 series , standard , 60 series , thick head
For reference if useing the framon 2 Pg 202 .
Block 1 .
Cutter fc8612 as Jeff as already pointed out it's the half step depth

Full step as increments of 0 .30 inch

Example. Cut Depths 1 to 6
1. 266
2. 236
3. 206
4. 176
5. 146
6. 116
all have steps of 0.30 " Full cut

Half step depth cuts
0 to X all have increments of 0.15 inch
0. 266
1. 251
2. 236
3. 221
4. 206
5. 191
6. 176
7. 161
8. 146
9. 131
X . 116 medeco

All have a increments of 0.15 inch in depth cut known as a ( half cut )
Remember a 6 full depth cut is the same as a X half cut both are ( 116 inch depth of cut ) .

Medeco keymark and biaxial or BI - AX have there own depths Of cut and increments again differ fyi .

Ringo