How to Make Cones

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Making a paper cone can illustrate a geometry lesson or form the basis of a Christmas-tree craft project. These instructions pertain to a card-paper cone but you also can use them for any pliable material.

Things You'll Need

  • Compass
  • Card paper
  • Scissors
  • Ruler
  • Paper clip or clothespin
  • Glue or staples
  • Determine the size of the finished cone you will need so that you know how large a piece of paper to start with. Experiment using copy paper before cutting your card paper. Or--if the cone isn't a math lesson--plug the numbers into an online calculator.

  • Use a compass to draw a circle of the appropriate size on a piece of flat card stock. Complete the entire circle before removing or adjusting the compass.

  • Cut out the circle, keeping the edge as rounded and smooth as possible. This edge will become the base of the cone.

  • Find the center point of the circle by measuring across the circle with a ruler and dividing the result by two. Mark the center point and draw a straight line from it to anywhere on the edge of the circle. This is the circle's radius.

  • Cut along the radius line, but don't go past the center point.

  • Hold the edges of the cut circle in your hands and bring one side under the other to create a cone shape. Use a clothes peg or paper clip to hold it in place.

  • Cut away the overlapping paper or turn the excess under the side edge of the cone. Turning under the excess will produce a thicker side, which may not be suitable for some craft projects.

  • Glue or staple the side edge of the cone to secure the shape.

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