A different way to draw a circle - Router Forums
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post #1 of 9 (permalink) Old 09-23-2017, 10:47 PM Thread Starter
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Default A different way to draw a circle

I haven't tried this but I assume that it works.
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post #2 of 9 (permalink) Old 09-23-2017, 11:13 PM
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Yeah, should work. But I think I would find it easier to drive a nail, put a loop of string over it, then stretch it out with a pencil, and run the pencil around. Probably more accurate tho to drive a nail thru a piece of wood for a pivot point, then stick a pencil thru a hole in the other end. But those would only be if I wanted a circle larger than a compass would mark out. And if I wanted to mark out a bunch of circles, all the same size, I would cut out one at the size I wanted, then just run a pencil around it.

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post #3 of 9 (permalink) Old 09-24-2017, 12:47 PM
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This works, but I found it to be hard to control the pencil and the square. It does work. There are easy ways. I have a ruler that I have drilled holes every 1/2 inch along it and one the ends. I just put a push pin in one end and select the radius of the circle I want and put my pencil in that hole and drag the ruler around. For me it is easier than a pin and string as I have trouble keeping the string tight. I also have a made a router guide that works great. Just a couple of thoughts on creating and drawing circles. I know there are probably better ways to do this and I am sure those of you on the forum have better thoughts than I do.
Thanks for reading
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post #4 of 9 (permalink) Old 09-24-2017, 01:26 PM
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We used to use the old square method on the job for carpenter work, but used the string and pencil for the large 10'r-40'r circles. The problem I had with the string and pencil is keeping the pencil square with the surface. Just a little tilt one way or the other would mark a different radius. So if we wanted an accurate curve we would use a stick with a hole for the pencil and a nail for a pivot point.

Trying to layout a 45'r wall on the 20th floor with the center point out side the building is a real challenge. We would then set the end points and calculate the distance at the center from the cord to the circumferance and set a nail then bend a long piece of flexible material around the three points. Close enough, nobody is going to check it anyway.
But bending a thin strip around nails will also give a good way to form curves.

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post #5 of 9 (permalink) Old 09-24-2017, 03:10 PM
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Another way I use all the time is a coffee can,spray can cap, tuna fish can, fender washer, water bottle cap the end of my thumb,(the right one is rounder than the left), etc.
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post #6 of 9 (permalink) Old 09-24-2017, 09:54 PM Thread Starter
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Shown in many of my posted projects is a coffee cup being used to draw curves.
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post #7 of 9 (permalink) Old 09-24-2017, 09:55 PM Thread Starter
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Quote:
Originally Posted by Tagwatts View Post
This works, but I found it to be hard to control the pencil and the square. It does work. There are easy ways. I have a ruler that I have drilled holes every 1/2 inch along it and one the ends. I just put a push pin in one end and select the radius of the circle I want and put my pencil in that hole and drag the ruler around. For me it is easier than a pin and string as I have trouble keeping the string tight. I also have a made a router guide that works great. Just a couple of thoughts on creating and drawing circles. I know there are probably better ways to do this and I am sure those of you on the forum have better thoughts than I do.
Thanks for reading
It sounds like a great idea to me Frank.

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post #8 of 9 (permalink) Old 09-29-2017, 08:12 AM
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Anyone got one of these? (gloat)
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post #9 of 9 (permalink) Old 09-29-2017, 02:06 PM
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Quote:
Originally Posted by harrysin View Post
Shown in many of my posted projects is a coffee cup being used to draw curves.
Dang it Harry, now I gots to orders me a mug, just so I can draws me curves.
Shop for Mugs at Discworld Monthly
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