From the page: The Tetra Pak gives much more than it seems
Idea 6
Sturdy papier-mâché sheets
Papier-mâché has existed for centuries and has even been used in furniture and helmets, precisely because of its surprising strength when paper fibers interlace with glue and dry. Long cartons are perfect for this: their long cellulose fibers form firm sheets, waterproofed by the plastic film already built into them.
What you need
- 8 to 10 Tetra Pak cartons, washed and dried
- Strong scissors
- Blender, or a basin and patient hands
- White glue (regular school glue works)
- Water
- Two flat surfaces or a tray with a screen
- Dry cloth and weight (thick books)
How to make it
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1
Tear the cartons into small bits and soak them in warm water for a few hours — softening the fibers is what later allows them to interlace.
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2
Blend the mixture in the blender with water until it becomes a homogeneous pulp, or knead it well with your hands in the basin; the more uniform the pulp, the smoother the sheet.
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3
Drain the excess water with a cloth and mix in the white glue until the pulp becomes moldable, like damp modeling clay — the glue is what gives cohesion and hardness once dry.
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4
Spread the pulp in an even half-centimeter layer over the screen or tray, pressing well to remove air bubbles that would weaken the sheet.
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5
Cover with a dry cloth, put a weight on top and let it dry for 2 to 3 days in a well-ventilated spot; the pressure keeps the sheet straight and dense.
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6
When it's hard and has no damp spots, lightly sand the edges — the sheet can be cut, pierced and painted like light wood.
Finishing touches
use the sheets for notebook covers, trays, picture frames or decorative cutouts; if you want more shine, a coat of water-based varnish does the trick.
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