How to Draw a Perfect Circle With String and Nail

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   Cutting string that's 1–2 inches (ii.5–five.one cm) longer than your desired radius. The circle y'all draw will have a bore that'due south twice every bit long every bit the cord you use, but you should cutting it one–2 inches (2.5–5.1 cm) longer than you lot want at first since you'll lose some of the length when you tie a loop at each end.^[1]

   • For case, if you want your circle to be four inches (10 cm) beyond, and then your desired radius would be 2 inches (v.1 cm) since the radius is equal to one-half of the diameter. Therefore, you'd cut the piece of cord to be nigh 3–4 inches (vii.six–10.two cm) long so you accept extra string on each end to tie the loops with.

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   Tie a modest loop at each end of the string. You lot'll use one of the loops to attach the string to a pin and the other loop to attach information technology to a pencil. The size of the loops doesn't demand to be precise, but make sure they're big enough to fit around a pencil and pin but non so big that they use up a lot of the string that you cut.^[2]

   • When you're finished tying the loops, y'all can measure the length of the cord to determine what the exact radius of your circle will be. If the radius is too brusque, you lot can ever cutting a longer slice of string and try again.

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   Place a piece of paper over some cardboard, styrofoam, or cork board. Any kind of textile will work as long as you're able to press a pin into information technology. This base under the newspaper volition give the pin something to stick into and assistance concord it in identify as yous utilize it to draw your circumvolve.

   • If you're cartoon your circle onto a slice of thick textile, like foam poster board or canvass, you tin can skip this step.
   • If you don't have anything to use as a base under your sheet of paper, you can effort holding the pivot in place on the paper with your fingers instead.

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   Push a pin through the newspaper where y'all want the center of your circumvolve to be. Any kind of push pivot will work, although the shorter the pin, the easier information technology will be to work with (since a alpine pin might stick upwardly more and be less stable). Make sure it's not also close to the border of the newspaper or else your circle might get off the page when you describe information technology.^[3]

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   Loop one terminate of the string over the pin. Don't worry about tightening the loop. As long as it'southward wrapped around the pivot, yous're all gear up.^[4]

   • It doesn't affair what finish of the string yous wrap around the pin. Just brand sure the loop on the other end is big plenty to wrap around a pencil.

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   Loop the other end of the string around the end of a pencil. Simply slide the tip of the pencil into the loop and then the string is wrapped around the pencil. It'southward OK if the loop slides down the pencil. Yous'll be pulling it taut later on so it stays in place.^[5]

   • Yous don't take to use a pencil to draw your circle—you can employ a pen, marking, colored pencil, or another cartoon utensil as long equally the loop fits around information technology.

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   Place the tip of the pencil on the paper so the string is pulled taut. Pull the pencil away from the pivot until the string is completely taut. Then, place the tip of the pencil down. This is where the edge of your circle will be.^[6]

   • Don't pull on the string also difficult or you could pull the pin out.

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   Draw a circumvolve with the pencil, keeping the string taut every bit you lot go. To draw your circle, slowly move the pencil in a circular move around the pin in the center, holding the pencil up straight and not at an angle. Keep gently pulling the pencil away from the pin in the center so that the string stays taut and your circle is fifty-fifty all the way around.^[7]

   • If you don't proceed the cord taut, you won't end upward with a perfect circle. If your mitt slips and you brand a mistake, merely erase what you lot've drawn and start over.

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   Remove the pin when you're finished cartoon your circle. If you want to describe some other circumvolve, you lot tin push the pin into a different spot on the paper and repeat the process. Otherwise, set the pivot and cord bated for the next fourth dimension y'all need to draw a perfect circle!

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Things You'll Need

• Paper
• Pencil
• String
• Scissors
• Pin
• Paper-thin, styrofoam, or cork board

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Article Summary X

To draw a perfect circumvolve using a pin, start past cut a piece of string that's 1 to ii inches longer than your desired radius and tying a small loop at each end. And then, place a piece of paper over some cardboard or styrofoam, button a pin through the center of the paper, and loop 1 terminate of the string over the pivot. Next, loop the other stop of the string around the end of a pencil, and pull the pencil away from the pin so the cord is completely taut. Finally, place the tip of the pencil on the paper and draw a circle, keeping the cord taut as you lot go. To learn more than, including how to keep the pin in place if yous don't have any paper-thin or styrofoam, keep reading.

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