One for Oliver - precise mechanical planetarium - Router Forums
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post #1 of 12 (permalink) Old 06-07-2018, 04:58 PM Thread Starter
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Default One for Oliver - precise mechanical planetarium

If this isn't his cuppa, I don't know what is.
How to Build a Precise Mechanical Planetarium
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post #2 of 12 (permalink) Old 06-07-2018, 05:16 PM
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Cool concept, looks kinda ugly though?

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post #3 of 12 (permalink) Old 06-07-2018, 05:45 PM
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That's not a planetarium, it's an Orrery!

From wikipedia dictionary

Orrery:
a mechanical model of the solar system, or of just the sun, earth, and moon, used to represent their relative positions and motions

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post #4 of 12 (permalink) Old 06-07-2018, 06:06 PM
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And while it is cool it's not really precise as advertised. He states the reasons why he didn't make it full size but one thing I missed in reading, and maybe he mentioned it, is that some of the planets are on a tilted axis of rotation relative to the bulk of the planets. Small detail, though. It's still cool.

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post #5 of 12 (permalink) Old 06-08-2018, 10:23 AM
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It wouldn't surprise me if in a week or two Oliver posted his version, I base this on some of his great past projects.
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post #6 of 12 (permalink) Old 06-08-2018, 11:20 AM Thread Starter
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Quote:
Originally Posted by CharlesWebster View Post
That's not a planetarium, it's an Orrery!
I don't name 'em, I just post 'em.
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"It ain't what you're told, it's what you know." - Granny Weatherwax
Gather the villagers, pitchforks, torches; we march at dusk!
Some days, the supply of available curse words is insufficient to meet my demands.
.....Call me a craftsman, artisan, or artistic, and I will accept that. Call me an artist and you will likely get a quite rude comment in return. I am not a @#$%ing artist.
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post #7 of 12 (permalink) Old 06-08-2018, 11:38 AM
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An interesting gadget. Lots of gearing. I guess each gear must have a precisely computed number of teeth to keep the motions correctly relative to the others, or the main drive gear. And then there's Pluto, with its eccentric orbit that bobs above and below the plane of the other planets. I think it's something of a miracle of computation.
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post #8 of 12 (permalink) Old 06-08-2018, 12:18 PM
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Originally Posted by JOAT View Post
I don't name 'em, I just post 'em.
Just correcting the terminology!

Comes from having been a technical writer for 30+ years ;-)
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post #9 of 12 (permalink) Old 06-08-2018, 03:21 PM Thread Starter
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Quote:
Originally Posted by CharlesWebster View Post
Just correcting the terminology!

Comes from having been a technical writer for 30+ years ;-)
Correct away. As long as you don't think I named it.
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"It ain't what you're told, it's what you know." - Granny Weatherwax
Gather the villagers, pitchforks, torches; we march at dusk!
Some days, the supply of available curse words is insufficient to meet my demands.
.....Call me a craftsman, artisan, or artistic, and I will accept that. Call me an artist and you will likely get a quite rude comment in return. I am not a @#$%ing artist.
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post #10 of 12 (permalink) Old 06-08-2018, 04:28 PM
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Quote:
Originally Posted by CharlesWebster View Post
Just correcting the terminology!

Comes from having been a technical writer for 30+ years ;-)
Charles, can you help people who donít talk good ?
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I donít always insulate , but when I do .
Ok ,I never insulate
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