Subject: Re: Circles

From: [email-masked] (Keith Foster)
Date: Wed, 26 Jun 1996 00:10:10 -0400

>I need to make circles 6" to 24" from 1/2" rods.  Is there a special form
>used for this sort of thing?  What do ya do?
>
>TIA,
>Cynthia
>TX

Hello.

For my rings (circles), I cut the steel to length and bend it around to a
crude square and use the mandrel (cone) to get it to the shape of the
circle.  It works, if you dont have a lot of rings to make.  The ends are
welded together and the shape is then obtained on the cone.  If you are
using a welder, clean up the weld after the ring is in the desired shape.
Otherwise, the weld will weaker and might break.

Don't forget the basic formulas..

For the length of steel for a given circle is:   (3.14 times the diameter)

But that well still give the incorrect size.  If the inside diameter is the
size then add the thickness of the steel, otherwise for the outside
diameter subtract the thickness.  For example:

For a 6 inch circle (inside diameter) using 1/2 round stock  =   (6.00 X
3.14) + .5 = 19.34 or  19 5/16 inches.

Keith

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Keith M Foster                                                      email:
[email-masked]
Mountain Village Blacksmith Shop                web page:
http://www.mvbs.com
Montville, Connecticut                                      shop phone:
(860) 848-7448
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