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Fold-alignment test

Compare a crease with the supplied center and mirrored marks. This is a single-sided fold-alignment check, distinct from the duplex trial sheet.

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Fold-alignment test / LETTER

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Do not print on both sides unless a different diagnostic explicitly instructs it.

Test the fold independently

Align the paper edges deliberately before creasing, then compare the marks through the folded paper. Repeat with a fresh sheet to separate a one-off hand-fold error from a consistent setup problem.

Printing, file details and help

About this file

A printing diagnostic, not a certified measuring instrument.

From file to finished page

  1. Choose the paper size loaded in your printer and open the matching PDF.
  2. Print at actual size and measure the 50 mm reference line before using physical measurements.
  3. Print one side only. Fold precisely along the central dashed line, aligning the top and bottom edges before creasing.
  4. Hold the folded paper to light and compare each mirrored pair of crosshair marks. Record any displacement rather than assuming the two sides align.
  5. Unfold and inspect the crease against the center line. A folding error and a scaling error are different problems; repeat with a fresh sheet to distinguish them.
Printing and use notes

Make one trial on ordinary paper before using special stock or preparing a batch. No physical test result is claimed.

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Fold-alignment test

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