How to Make a Paper Cylinder With a Wide Bottom and Narrow Top

How to Make a Paper Cylinder With a Wide Bottom and Narrow Top thumbnail
Use a funnel for a science experiment.

A cylinder is a hollow geometric figure with straight parallel sides and a circular section. When you make certain adjustments, you can change the shape of a paper cylinder into other shapes such as a cone or funnel. A funnel is narrow at one end, wide at the other and often used to pour liquid or dry ingredients into a bottle or other item with a small opening.

Things You'll Need

  • Paper plate
  • Scissors
  • Transparent tape
  • Compass
  • 8 1/2-inch by 11-inch sheet of paper
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Instructions

  1. Paper Plate

    • 1

      Fold the plate in half to form a half circle and then fold the half circle in half again.

    • 2

      Unfold the plate to see four circular triangles.

    • 3

      Cut out one of the triangles from the outer edge to the middle.

    • 4

      Roll one edge of the plate to overlap the other edge and form the shape of a cone. Tape the end of the cone to secure it in place.

    • 5

      Cut off the point of the cone to form a funnel. Only cut a small piece from the point so that the funnel opening isn't too large.

    Compass and Paper

    • 6

      Use the compass and a pencil to draw a four-inch diameter circle.

    • 7

      Cut out the circle and discard the remaining scraps of paper.

    • 8

      Fold the circle in half and then fold it in half again. Unfold the circle to see four triangles.

    • 9

      Cut out one of the triangles from the outer edge to the middle.

    • 10

      Roll one edge of the plate to overlap the other edge and form the shape of a cone. Tape the end of the cone to secure it in place.

    • 11

      Cut off the point of the cone to form a funnel. Only cut a small piece from the point so that the funnel opening isn't too large.

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  • Photo Credit Jupiterimages/Goodshoot/Getty Images

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