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 Post subject: Thoughts about designing puzzle cores.
PostPosted: Fri Aug 23, 2013 7:32 am 
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Why must the core arms in ball cores all meet in the center? Why not have them go partway then stop? It saves some material.

Another question arises about putting holes into the core. What are the general guidelines to design these? So far the 'rule' I follow is that the holes must be smaller than the piece they are under, but some shapeways puzzles I have break that rule so I assume the rule is not valid.

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 Post subject: Re: Thoughts about designing puzzle cores.
PostPosted: Fri Aug 23, 2013 8:46 am 
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1) I have several puzzles where the arms don't go all the way.

2) That's probably a good rule to use as it prevents pieces from sinking in and catching. But clearly, it's not an absolute necessity.

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 Post subject: Re: Thoughts about designing puzzle cores.
PostPosted: Fri Aug 23, 2013 10:48 am 
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I used to make the core arms stop mid-way as well, but this made the arms more fragile. Having them connected seemed to make them more robust.

Also, I usually put many small holes in my cores, rather than only a handful of large holes. This prevents pieces from falling in and makes the assembly process significantly easier. I also fillet the edges to make pieces ride smoother over them.

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