Paper crafts

Parallel-fold pop-up insert

A 140 mm square insert with two 40 mm cuts that form a parallel-fold pop-up step.

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Paper
US Letter
Pages
2
Sheet
215.9 × 279.4 mm
Format
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Pages in this PDF
  • Page 1 — pop-up insert
  • Page 2 — Assembly instructions

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Parallel-fold pop-up insert / LETTER

A good fit for your idea?

Read the full joining and folding sequence, then dry-fit one plain-paper trial. Panel measurements do not guarantee usable internal capacity.

Inside this edition

Instruction pages
1

A 140 mm square insert with two 40 mm cuts that form a parallel-fold pop-up step.

From file to finished page

  1. Choose the paper size loaded in your printer and open the matching PDF.
  2. Print at actual size (100%) on the matching paper. Measure the 50 mm reference line on a physical trial; a screen ruler is not a print check.
  3. Cut the 140 mm square. Crease its horizontal center line before making interior cuts.
  4. Fold at the center. Cut the two slit lines only between their indicated endpoints, crossing the fold while keeping the surrounding sheet connected.
  5. Unfold slightly. Reverse the center fold of the 40 mm-wide band inward, using the two extra creases to form a step.
  6. Close the insert gently to confirm the step collapses flat, then open it to approximately a right angle.
  7. Mount the outer halves in a separate card only after testing. Keep glue away from the moving step and all three step creases.
Printing and use notes

Make a scrap-paper trial before using special material or producing a batch.

Digital geometry does not establish physical assembly, durable joins, material fit or compatibility with a particular product.

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Parallel-fold pop-up insert