Subject: Circle Calculation

From: Mike Linn <[email-masked]>
Date: Sat, 6 Apr 96 11:37 EST

Good Evening Boys and Girls,
        Got a question for you. Im making a gate and the design calls for a 
7 inch O.D. ring made from 1/2inch square mild steel. How do I calculate the
required stock. I know about pi*D but what about taking into account the
thickness of the stock and the amount scarfed for the forge weld.

Any help will be deeply appreciated. When the gate is finished I'll post a
picture of it on the AFC web page.

thanks,
mike
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               Michael Linn 
            Artisian Blacksmith
              AFC Web Master
 http://www.the-matrix.com/afc/index.html
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Smile, it makes people wonder what you've been up to.

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From: "David C. Hufford" <[email-masked]>
Date: Sun, 07 Apr 1996 18:45:36 -0400 (EDT)

The calculation for a ring, if butt welding with gas or electric is:

	(ID + thickness of metal) x pi = L of stock required

If lap forge welding, the calculation is:

	((ID + thickness of metal) x pi) + two times thickness of the 
	metal = L of stock required

The latter equation allows for the necessary scarfs, the length of which 
should not exceed the thickness of the stock used.

David C. Hufford