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Home / Drawing a Circle With Pencil and String

Drawing a Circle With Pencil and String

  1. 1

    Cut string that's 1–ii inches (2.v–five.1 cm) longer than your desired radius. The circle you depict volition take a diameter that's twice as long as the string y'all use, but you should cut it one–ii inches (2.five–v.1 cm) longer than you desire at offset since you'll lose some of the length when you tie a loop at each stop.[1]

    • For example, if you lot want your circle to be 4 inches (10 cm) across, and then your desired radius would exist two inches (5.ane cm) since the radius is equal to one-half of the diameter. Therefore, you'd cut the piece of string to be about iii–iv inches (7.6–x.two cm) long so you lot take extra string on each end to tie the loops with.

  2. 2

    Tie a small loop at each end of the string. Yous'll utilise 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 need to be precise, only make sure they're big plenty to fit around a pencil and pin merely non so big that they utilise up a lot of the string that you cut.[ii]

    • When you're finished tying the loops, you tin mensurate the length of the string to make up one's mind what the exact radius of your circle will be. If the radius is too short, yous tin always cutting a longer slice of string and try over again.

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  3. 3

    Identify a piece of paper over some paper-thin, styrofoam, or cork board. Any kind of fabric will work as long as you're able to printing a pin into it. This base under the paper volition give the pin something to stick into and assistance hold it in place as you utilize information technology to draw your circle.

    • If you're drawing your circle onto a piece of thick cloth, like foam affiche board or canvas, you can skip this stride.
    • If you don't have anything to utilise as a base of operations under your sheet of paper, yous can try holding the pin in place on the paper with your fingers instead.

  4. 4

    Button a pin through the paper where you want the center of your circle to be. Whatever kind of button pivot volition work, although the shorter the pin, the easier it will be to piece of work with (since a tall pivot might stick up more than and exist less stable). Make certain information technology'southward not too close to the edge of the paper or else your circle might go off the page when you draw it.[three]

  5. 5

    Loop one cease of the cord over the pin. Don't worry about tightening the loop. As long as information technology's wrapped around the pin, yous're all set.[iv]

    • It doesn't affair what stop of the cord you lot wrap around the pivot. Just make sure the loop on the other end is big enough to wrap effectually a pencil.

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  1. one

    Loop the other cease of the cord around the end of a pencil. Only slide the tip of the pencil into the loop so the string is wrapped around the pencil. Information technology'southward OK if the loop slides down the pencil. You'll be pulling it taut subsequently on so it stays in place.[5]

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

  2. two

    Place the tip of the pencil on the paper and so the string is pulled taut. Pull the pencil abroad from the pin until the string is completely taut. So, place the tip of the pencil downwards. This is where the border of your circle will exist.[6]

    • Don't pull on the string as well hard or you could pull the pin out.

  3. 3

    Draw a circle with the pencil, keeping the string taut as you become. To draw your circle, slowly move the pencil in a circular motion around the pivot in the center, holding the pencil up straight and non at an angle. Keep gently pulling the pencil away from the pin in the center so that the cord stays taut and your circle is fifty-fifty all the way around.[7]

    • If you don't proceed the string taut, you lot won't end up with a perfect circle. If your hand slips and you lot make a mistake, merely erase what you've drawn and kickoff over.

  4. 4

    Remove the pin when y'all're finished drawing your circle. If you want to draw another circle, yous tin push the pivot into a different spot on the paper and repeat the procedure. Otherwise, set the pin and string aside for the next fourth dimension you need to draw a perfect circle!

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Things You'll Demand

  • Paper
  • Pencil
  • String
  • Pair of scissors
  • Pivot
  • Paper-thin, styrofoam, or cork board

About This Commodity

Commodity Summary 10

To draw a perfect circle using a pin, outset by cutting a piece of string that's i to two inches longer than your desired radius and tying a small loop at each end. Then, place a slice of paper over some cardboard or styrofoam, push a pivot through the center of the paper, and loop one finish of the cord over the pivot. Next, loop the other finish of the cord effectually the end of a pencil, and pull the pencil away from the pin then the string is completely taut. Finally, place the tip of the pencil on the paper and draw a circle, keeping the string taut as yous go. To larn more than, including how to keep the pivot in place if you don't have whatsoever paper-thin or styrofoam, keep reading.

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