tag:blogger.com,1999:blog-24269904.post1534858367925872784..comments2008-06-26T21:22:35.235-07:00Nic Wallerhttp://www.blogger.com/profile/16059916293704253795noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-24269904.post-50609743613968992952008-06-26T21:22:00.000-07:002008-06-26T21:22:00.000-07:00It's pretty clear that the intersection of three cylinders suffices (I couldn't model it in my head, though, as there are too many faces to the resulting solid), but there are a number of resulting variations; taking that shape, overlay it over the intersection of three perpendicular (2D) circles with common radius and center. You may remove any space that is not in the intersection of these two shapes and result in a shape that satisfies your requirements. This was what I was trying to tell you on Facebook earlier :PChristopher Scotthttp://www.blogger.com/profile/17270427099259648325noreply@blogger.comtag:blogger.com,1999:blog-24269904.post-54798073157982287792008-06-26T18:35:00.000-07:002008-06-26T18:35:00.000-07:00After thinking about it some more, I realized that the maximal shape is actually the intersection of three perpendicular cylinders.<BR/><BR/>Once I realized this, it was easy to search for on Google. Here is a great explanation with pictures.<BR/><BR/>http://ozviz.wasp.uwa.edu.au/~pbourke/fun/planelev/Nic Wallerhttp://www.blogger.com/profile/16059916293704253795noreply@blogger.com