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How To Make A Flat Pattern For A Cone


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#1 Tony Mertens

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Posted 27 February 2011 - 07:24 PM

Does anybody have a formula for laying out a flat pattern for a sheet metal cone? I need one 5" dia. at the top, 1-1/2" at the bottom and 6" tall. I think. That's why I'm looking for a formula. I found one on sheetmetalworld.com but it doesn't work and I think there is missing information. My buddy woodtick drew one up for me with Google Sketch-up, but now I'm curious about the formula.

#2 PTsideshow

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Posted 27 February 2011 - 10:21 PM

if it is a transition cone you are looking for check this out cone program It works only with Microsoft Internet Explorer.

or here

or this one

You do the math!
If these don't help, I can see what in the sheet metal pattern books in the shop in the AM
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glen

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"I am not ashamed to admit, that I am ignorant of the things I do not know"!

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All the usual and standard disclaimers apply. Do not try this at home, use only as directed, No warranties express or implied, for the intended use or suggested uses, Wear safety glasses, closed course, professionals only

#3 Rich Waugh

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Posted 28 February 2011 - 07:27 AM

This is as straightforward a method as I've seen for generating the pattern for a frustum of a cone: Frustum of Cone

This is the method I use and it works for me.
The older I get, the better I used to be.

http://www.caribbeanblacksmith.com

#4 Kevin Caron

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Posted 28 February 2011 - 08:10 AM

Math on a Monday makes my head hurt.

and yes, I know a head that looks like this is supposed to hurt!!
~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.

Kevin Caron kevin at kevincaron.com 602-952-8767


~. inspired sculpture for public & private places .~


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