Tip of the Month: Finding the center of a circle

There comes a time when building scenery that you will run into something that is round, whether its a dome, a sphere, etc.  By itself, it does not pose any problems.  But what if you need to find the center of a item you didn't make yourself.  This little tip will help you solve that problem.  And yes, there is some math involved.

First, choose two points on the perimeter of the circle and draw a line between them.  You'll need to find the center of this line so choose two points at a distance that is easyily divided by two.

Second, draw a line at a right angle to the center of the first line using a square.  This new line passes through the center of the circle.

Third, repeat step 1 with another two points on the circle.

Lastly, repeat step 2 to creat a second line that passes through the center of the circle.  The point at which they intersect is the center of the circle.   See the figure below.

You can use this for drilling, painting, attaching it to a base, and many other things.
TTFN