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Ellipse - Pin & String Method

Ellipse - Pin & String Method. Y. An ellipse is an oval shape with no regular radius. X. X. It is set up along 2 axes. The “X” axis is always the longest one. Y. The “Y” axis is always the shortest one. Ellipse - Pin & String Method. Y. Step 1. Mark out the “X” axis. Step 2.

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Ellipse - Pin & String Method

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  1. Ellipse - Pin & String Method Y An ellipse is an oval shape with no regular radius. X X It is set up along 2 axes. The “X” axis is always the longest one. Y The “Y” axis is always the shortest one.

  2. Ellipse - Pin & String Method Y Step 1. Mark out the “X” axis. Step 2. Find the centre of the X axis. X X Step 3. Mark in the “Y” axis. Y

  3. Ellipse - Pin & String Method Y Step 4. Set the compass to ½ the “X” axis X X Step 5. Move the compass to the Y point and mark off the distance along the X axis Y

  4. Ellipse - Pin & String Method Step 6. Place small nails or pins at points F1, F2 and C Y C Step 7. Tie a piece of string, (builders line is best) to the nail at F1. X X F2 F1 Y

  5. Ellipse - Pin & String Method Step 8. Take the string around C and to F2 and tie off. Make sure it is stretched reasonably tight. Y C X X - Too tight and it will pull the nails out F2 F1 - Too loose and the ellipse will be the too big Y

  6. Ellipse - Pin & String Method Step 9. Insert pencil in place of nail at point C Y X X Y

  7. Ellipse - Pin & String Method Y Step 10. Scribe the arc by keeping the string tight with the pencil and moving it to the left or right. In this example we have gone left. X X Y

  8. Ellipse - Pin & String Method Y X X Y

  9. Ellipse - Pin & String Method Y X X Y

  10. Ellipse - Pin & String Method Y X X Y

  11. Ellipse - Pin & String Method Y X X Y

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  27. Ellipse - Pin & String Method Now you have created the perfect ellipse. You can use a band saw or jig saw to cut the shape. You can clean up the edges with a disc sander or belt sander and then make a router template for repetitive work.

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