Main > Main Forum
How to find the center point of a circle
(1/6) > >>
shmokes:
On a pretty regular basis during the construction of my cab, I've found myself needing to find the exact center point of a circle, for example when I've drawn a circle I need to drill out with a hole saw, but need to position the drill exactly in the center to make sure it gets cut out in the right location.  I often just eyeball it, or make a bunch of rough measurements.  But I just stumbled across this simple method of finding the exact center point with just a pencil, straight-edge (ruler) and compass. 

Just thought others who don't already know the trick might find it useful.  After you do it a couple of times you get very fast at it.  You don't actually need to draw complete circles because you can estimate approximately where they will meet and overlap.
surface tension:
Shmokes, were you not paying attention in school?  ;)
jardine:

--- Quote from: st on August 14, 2008, 03:19:02 am ---Shmokes, were you not paying attention in school?  ;)

--- End quote ---

I think i was always off chasing girls....great link shmokes..
shmokes:

--- Quote from: st on August 14, 2008, 03:19:02 am ---Shmokes, were you not paying attention in school?  ;)

--- End quote ---

Heh . . . I barely even went to school.   ;D  As graduation was coming up my school offered after school detentions that students could attend to bring their citizenship grade up.  I had to attend more detentions to qualify for graduation than any other kid in my high school.  I skipped at least one class almost every single day.  Too bad.  I could have done high school in my sleep if I had cared.  Years later I ended up having to work full-time all through college.  I learned discipline way too late in life (and I still only have a modicum of it  ;D ).
surface tension:
Discipline to build yourself a machine is discipline enough. Though maybe you ended up building it at night to make up for shirking in the day!
Navigation
Message Index
Next page

Go to full version