What Tool Do You Use to Draw a Perfect Circle

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   Cutting string that's ane–ii inches (two.5–5.i cm) longer than your desired radius. The circle yous describe will have a diameter that'south twice every bit long as the cord y'all apply, simply you should cut it 1–2 inches (2.five–5.1 cm) longer than you want at offset since you'll lose some of the length when you tie a loop at each cease.^[1]

   • For instance, if y'all want your circle to be four inches (10 cm) beyond, and so your desired radius would be 2 inches (5.1 cm) since the radius is equal to half of the diameter. Therefore, you lot'd cut the piece of string to be about three–four inches (seven.half dozen–ten.2 cm) long so yous have extra string on each end to tie the loops with.

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   Necktie a small loop at each cease of the string. You'll utilize ane of the loops to attach the string to a pin and the other loop to attach it to a pencil. The size of the loops doesn't demand to be precise, but make sure they're big plenty to fit around a pencil and pin but not then big that they use up a lot of the string that yous cut.^[2]

   • When you're finished tying the loops, you tin can measure the length of the string to make up one's mind what the exact radius of your circle will be. If the radius is as well brusque, yous can always cutting a longer piece of string and try once again.

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   Place a piece of newspaper over some cardboard, styrofoam, or cork board. Any kind of material will work as long equally you lot're able to press a pin into it. This base of operations under the paper will give the pin something to stick into and assistance agree information technology in place as y'all use it to describe your circle.

   • If you're drawing your circumvolve onto a piece of thick fabric, like cream poster board or sail, you can skip this step.
   • If you lot don't have anything to use as a base under your sheet of paper, you can try holding the pin in place on the paper with your fingers instead.

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   Push a pin through the paper where you want the heart of your circle to be. Whatsoever kind of push pivot will work, although the shorter the pivot, the easier information technology will exist to work with (since a alpine pivot might stick up more and be less stable). Brand sure information technology's not also close to the border of the paper or else your circle might go off the folio when you draw it.^[3]

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   Loop one end of the string over the pin. Don't worry about tightening the loop. Equally long as it's wrapped around the pin, you're all fix.^[4]

   • It doesn't matter what end of the cord you wrap around the pivot. Only brand sure the loop on the other end is big enough to wrap around a pencil.

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   Loop the other end of the string around the terminate of a pencil. Simply slide the tip of the pencil into the loop so the string is wrapped around the pencil. Information technology's OK if the loop slides down the pencil. You'll be pulling it taut afterwards on so information technology stays in place.^[5]

   • You don't have to use a pencil to draw your circle—you can use a pen, marker, colored pencil, or another drawing utensil as long as the loop fits effectually it.

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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. And so, identify the tip of the pencil down. This is where the edge of your circumvolve will exist.^[vi]

   • Don't pull on the string as well difficult or you could pull the pivot out.

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   Draw a circle with the pencil, keeping the string taut as you become. To describe your circle, slowly move the pencil in a circular motility around the pin in the center, belongings the pencil up directly and non at an angle. Keep gently pulling the pencil away from the pin in the middle so that the string stays taut and your circle is even all the way effectually.^[7]

   • If yous don't keep the cord taut, y'all won't stop upwardly with a perfect circle. If your hand slips and you make a mistake, just erase what you've fatigued and start over.

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   Remove the pin when you lot're finished cartoon your circle. If y'all want to draw some other circle, you can push the pin into a different spot on the paper and repeat the process. Otherwise, ready the pin and string aside for the adjacent time you lot demand to depict a perfect circle!

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Things You'll Need

• Paper
• Pencil
• String
• Scissors
• Pin
• Cardboard, styrofoam, or cork board

About This Article

Article Summary X

To draw a perfect circle using a pin, start by cutting a piece of string that'due south one to 2 inches longer than your desired radius and tying a pocket-sized loop at each finish. And so, identify a slice of paper over some cardboard or styrofoam, push a pivot through the center of the paper, and loop i end of the string over the pin. Side by side, loop the other end of the string around the cease of a pencil, and pull the pencil away from the pin and so the string is completely taut. Finally, place the tip of the pencil on the paper and draw a circumvolve, keeping the string taut equally you go. To learn more than, including how to keep the pin in place if you don't have whatever cardboard or styrofoam, go along reading.

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Source: https://www.wikihow.com/Draw-a-Perfect-Circle-Using-a-Pin

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