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.
US Letter · 2 PDF pages · Print PDF
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- US Letter
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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.
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- 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.
Printing, file details and help
About this file
- 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
- Choose the paper size loaded in your printer and open the matching PDF.
- 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.
- Cut the 140 mm square. Crease its horizontal center line before making interior cuts.
- Fold at the center. Cut the two slit lines only between their indicated endpoints, crossing the fold while keeping the surrounding sheet connected.
- Unfold slightly. Reverse the center fold of the 40 mm-wide band inward, using the two extra creases to form a step.
- Close the insert gently to confirm the step collapses flat, then open it to approximately a right angle.
- 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.
Direct PDF files by design
Parallel-fold pop-up insert (2 files)
- US Letter — print PDF · 2 pages
Page numbers and contents
- Page 1 — pop-up insert
- Page 2 — Assembly instructions
- A4 — print PDF · 2 pages
Page numbers and contents
- Page 1 — pop-up insert
- Page 2 — Assembly instructions