Formax FD 38X Operator's Manual page 18

Measuring Fold Lengths
Use the examples below to help determine the fold lengths for custom fold settings.
Example 1: "Z" Fold
1. Measure the length of panel "A", enter this number as the upper
fold table measurement.
2. Measure the length of panel "B", enter this number as the lower
fold table measurement.
Example 2: "C" Fold
1. Measure the length of panel "A" + "B", enter this number as the
upper fold table measurement.
2. Measure the length of panel "B", enter this number as the lower
fold table measurement.
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Panel A
Panel B
Panel A
Panel B