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Would you like to add information to this article? Interested in writing or submitting an article? Have a question about this article? How to Draw an Oval Question
Forum Responses
Spreadsheet Calculation Program
From contributor K: Draw two lines which bisect each other at right angles. Measure out from the center line and establish a point that is half of the short diameter. From this point, strike an arc which is half of the long diameter, where it crosses the other line, or perpendicular axis. This is the placement for the pins. The length of the string is the long diameter, which is the same as the hypotenuse of the two congruent back to back triangles described by these steps. I hope this answers your question. I would not use this method for actually making patterns, but only for quick and dirty drawings. Also use only very thin low stretch line like spider wire fishing line.
From contributor R: I sometimes need to draw an oval that has to fit a particular opening that a mechanically drawn oval doesn't work with. I draw bisecting lines on tracing paper, mark the horizontal and vertical extremes, then freehand sketch the oval. I then choose the quadrant that looks best and best fits the needed space. Next I fold the tracing paper in half along one axis and trace the selected quadrant. Then I fold along the other axis and finish the tracing From contributor D: I learned to do it with string in the shop, but now I just use ACAD and print full size. From contributor L: To draw an oval to a precise size using the method of a loop of string as already explained by the other contributors... I have found that there is a simple calculation of how far apart the two pins on the base line need to be placed. This is as follows: (The Square root) of ((Width squared) less (Height squared)) = the base distance between the two pins. For example, if the desired Width of the oval is 12, and the Height is 8, the calculations are: 12 squared = 144 less, 8 squared being 64 = 80. The square root of 80 is 8.944272, which is the width of the required base line. From contributor A: E A P C P B D Steps to drawing an Oval
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