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A closed cardboard box with red text and symbols, labeled "HANDLE WITH CARE" and "GOODIE DOS", sits on a wooden floor.
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How to Reshape a Cardboard Box

Find out how to reshape cardboard box to maximize packing efficiency. No new boxes needed, just a few simple tools.

Ingredients

  • Cardboard box
  • Scissors
  • Ruler
  • Marker
  • Packing tape

Instructions

  • Lay the box flat with the flaps opened out. Decide how narrow or long you want the new shape to be. Use a ruler to measure and mark a vertical line on each flap where the new edge should be. This is where you’ll fold or cut to reshape the box.
    A closed cardboard box on a wooden floor with a clear ruler and a black marker placed on top. Red dot markings and a blue line are drawn on the box flaps.
  • With your marker and ruler, connect the marks vertically along each flap to create straight cutting guides. Do this on both sides of the box, long flaps and short flaps. These lines will shape the new box dimensions.
    A cardboard box with four flaps partially cut, a clear plastic ruler, and a black marker lying on top, placed on a wooden floor.
  • Grab your scissors and carefully cut along the lines. Stop when you reach the base of the flap. This step is what allows the flaps to be repositioned and the box reshaped.
    A hand holding scissors cuts open the top seam of a large cardboard box on a wooden floor.
  • Turn the box around and repeat Steps 1 to 3 on the other two flaps. You’ll now have four clean cutouts, ready to fold in and reshape the box into a new rectangle.
    An empty, open cardboard box sits on a dark wooden floor, viewed from above.
  • Now fold the trimmed flaps inward at the new height or width you measured earlier. Push both long and short flaps toward each other so they meet evenly. You should see the box start to form a more rectangular shape.
    Two hands are folding the flaps of an open cardboard box on a wooden floor.
  • With all flaps folded in, adjust the corners and edges to line up evenly. Press the sides together to hold the shape and prepare for taping.
    A person is assembling a cardboard box on a wooden floor, holding the flaps open.
  • Use strong packing tape to seal all the edges and flaps. Tape along the top seam, then reinforce the sides and corners to hold the new shape. Don’t skimp on tape, strong seals make the box stable and ready for use.
    A person’s hands are taping a cardboard box labeled “HANDLE WITH CARE” and “I LOVE FAMILY” on a wooden floor.