And here is a version with a spherical image printed on it: http://www.flickr.com/photos/sbprzd/3135520252/in/set-72157604502314691/ and they can indeed be printed and glued: http://www.flickr.com/photos/sbprzd/3074973521/in/set-72157604502314691/ Cheers, Seb On Mon, Aug 23, 2010 at 10:14, Bill Gosper <billgosper@gmail.com> wrote:
Here we go again. www.tweedledum.com/rwg/baseball.png . The cusps are the endpoints of the cut (= the conical points on the translucent solid (= convex hull)). We should check it by cutting one out of a rag. For a unit radius sphere, the distance between the parallel sections of the cutout is 2 sin 4 pi/5 . The angle they span is sin(pi/10) pi (!), and the angle spanned by the elbows is sin(3*pi/10) pi. --rwg For your calculating pleasure: 12/5/(3-sqrt 5).
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