A 10 yr old friend solves the mystery (and makes me feel stupid). --rwg -------- Original Message -------- SUBJECT: Re: [math-fun] Seven-Planet Somsky Gears DATE: 2015-10-26 10:11 TO: rwg <rwg@sdf.org> Don't think so. According to the Shapeways page, the red gear is split into two parts. -Me! On Tue, Oct 20, 2015 at 12:32 PM, rwg <rwg@sdf.org> wrote:
(Excepting the crank), was it 3D-printed pre-assembled?? How did he put it together? --rwg
On 2015-10-19 17:10, William R Somsky wrote: About all I can say is: COOL!
Seeing it as a computer generated graphic is one thing, but to see it in real, physical form? WOW! :-)
I'm kinda amazed that the three-tooth gear worked! Probably wouldn't have if you hadn't made them all double-helical.
Well done!
- Bill Somsky
On 2015-10-19 06:39, M. Oskar van Deventer wrote: Hi Mathfun friends,
See here a 3D-printed version of the Seven-Planet Somsky Gears. https://www.youtube.com/watch?v=3iyO-OvIS_k [1] https://www.shapeways.com/product/SPGDQSRLE/seven-planet-somsky-gears [2]
Someone at the Twisty Puzzles Forum asked the question "Is there a link to the arguments for the maximum number of planets?" http://twistypuzzles.com/forum/viewtopic.php?p=342755#p342755 [3]
Enjoy!
Oskar We do!
Links: ------ [1] https://www.youtube.com/watch?v=3iyO-OvIS_k [2] https://www.shapeways.com/product/SPGDQSRLE/seven-planet-somsky-gears [3] http://twistypuzzles.com/forum/viewtopic.php?p=342755#p342755