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How to draw a perfect oval??

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nostrebor:

--- Quote from: Ed_McCarron on November 07, 2005, 10:57:24 pm ---"true blueprints with the machine that smells like ammonia."

Diazo paper?

--- End quote ---

Heh.

We still use a blueprint machine at work for random copies. I'm sure I'll die of some strange cancer related to inhaling ammonia. It's always funny when someone comes into the room that isn't used to the smell. They usually cry, and run away. ;D

Mark70:
Your best optoins are in order:

-have a full size pattern printed.  (post your dimensions here and I'll do a pdf you can take to a print shop.

-construct it using a compass like suggested above.  Takes  a little delve back into those highschool geometry books.

-use the nails and string solution.  Not most accurate but works for things like a drywall bulkhead.

gw71mgb:
Even in Elementary School, I always thought that the fumes from the Mimeograph machines couldn't possibly be good for you.

javeryh:
Just do the geometry!

http://mathworld.wolfram.com/Ellipse.html

Matt Berry:
The simplest method besides plotting and string and such. Is to take a thin piece of wood or plastic that is semi-flexible, drill holes in the end, run a string through the two holes and tighten until you acheive the desired results. There are places where you can buy these already premade, leevalley comes to mind.

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