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Old 09-19-2009, 04:43 PM
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B-Manic B-Manic is offline
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The formula with a good explanation for true cones
A sheet metal cone
Another approach
Learn how to layout a cone in sheet metal

online tool for truncated cones
Cones | Sheet Metal Transition (ONLY works with Microsoft Internet Explorer)
online tool for truncated and non-truncated cones
Cone and truncated cone

Or you can download Siatki 1.0.1 free from Gremir Paper Models it does a few standard shapes.

The paid version - Siatki v.3.2 does 25 different standard objects, plus, by using the Creators, can unfold objects limited by two flat surfaces (any shape and placement). Siatki software can also unfold toroids. Surfaces can be defined by the user or imported as DXF files. The software also allows you to insert panel lines on the created skins.
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