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Old 23-10-2016, 04:33 PM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,927
Marc,
Neat video....
But it doesn't show the comparison between the conical (say f5 beam) section surface and that of a cylindrical section (based on the diameter being the same as the minor axis of the conical section.)
Believe me, the surfaces are NOT the same.....

I'll try to find the "drafting 101" tutorial on cutting sheet metal sections - like cutting and joining a conical funnel compared with cutting and joining a cylindrical tube.
(The major axis length of the conical section isn't the same length as a 45 degree cut through a cylinder with the same diameter as the conical minor axis)
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