# How to Draw an Oval With Abandoned Drawer Knobs

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All things that you need:
(1)the blue tacks
(2)A4 papers (one clean and one recycled)
(3)thread( I use dental floss here.)
(4)two abandoned knobs

If you are clever enough, you don't need to view the following steps. You understand immediately : )

Please view the video at https://vimeo.com/119302181 when it is not shown.

## Step 1: Get the Abandoned Drawer Knobs From the Gabages

Keep the screws if you can find them.

## Step 2: Mark Two Centers of the Oval on the Back of Your Paper

(2.1)Fold the recycle paper into 8 columns and 2 rolls and pick two points to be the centers of the oval.

(2.2)Transfer the marks to the back of a clean paper.

(2.3) Put the blue tacks at the centers and 4 corners of the paper

(2.4) Stick the paper to your table

## Step 3: Stick the Drawer Knobs to the Front of the Paper

Adjust the thread to fit the height and width of the paper.

## Step 5: Now, You Can Draw!

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## 10 Discussions

It's not complicated. But it is every good idea. I like it very much.

: ) Yes. The knobs are the focal points apart from the center points. If I try to improve the design, I would make a straight line with the dental floss instead of a circle. Then, I am more flexible to adjust the curve of the circle with the same width.

Just learned about this. Knobs are the Foci and the two strings (a&b) form the differential "c" distance from the origin. Lol.

Cool! You know, if you shorten the string and just use one if the knobs, you can draw a perfect circle too.

Quite nifty! I taught this method to my woodwork students to make oval wooden boards. All they could think of to use it for was to make WC-signs! :-/