Just curious - why is this so popular it comes up every month?
It seems like a largely boring problem that can be solved by any
beginner with just a ltitle patience. I suppose it would be mildly
interesting if there was a battle to see who could pull it off in the
fewest features, but even then it still just a ball with a bunch of
revolved cuts in it.
I just think I must be missing something, because it is endlessly
fascinating to folks on this newsgroup. Or is it just that Spring is
on its way in the Northern Hemisphere
Sign me 'curious'
Some time ago I read an article in a magazine talking about how many patents
involve golf. (It was probably in a plastics magazine and involved patents
related to plastics and plastic parts.) I can't remember the numbers now,
but it was absolutely amazing what the percentage was.
Tripod Data Systems
"take the garbage out, dear"
77 dimples? Not even close. Of course all manufacturers have a different
design and number of dimples, but mostly they average around 330. There are
approximately 33 at the equator of the ball, then naturally the number
diminishes as the smaller perimeters migrate towards either of the two the
poles.There are approximately 10 perimeters, growing progressively smaller,
and running paralell to the equator, running north and south. It shouldn't
be a very difficult mathematical indexing for you to do, but I wouldn't go
so far as to say that it is "simple".
G. De Angelis
It is pretty straightforward if you realize that the dimples are based on
the icosahedron.You actually need to carve only four (4) dimples! The
toughest part was to find out how to pattern the geometry with minimum
amount of features.
Pretty interesting modeling problem, though!
The "optimal" position of N dimples on a sphere can be found on
Import the table in Excel, do some math to obtain the XYZ locations
of the points, export to .csv and use one of the many macros around
to read the points in a 3D Sketch. Then use the HoleWizard to create
Ensure you don't violate any patent on the dimples patterns, there
are MANY patents on the topic :-)
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