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"Earth not so flat" from the shop [message #36951] Wed, 19 October 2011 12:55 UTC Go to next message
avatar daniel.c.alexandre  is currently offline daniel.c.alexandre
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The "Earth not so flat" from the shop is pretty cool.
But I was looking for quite the same but without the sea levels so that you could see the deepness of the oceans in contrast with the rest of the terrrain relief.
Also the multiplier he uses seems fine but I wanted a big diameter, 20 inches or so. How much would that give for the max and min relief according to the multiplier factor he uses? What do you reckon?

Regards,
Dan
Re: "Earth not so flat" from the shop [message #36952 is a reply to message #36951 ] Wed, 19 October 2011 13:04 UTC Go to previous messageGo to next message
avatar Youknowwho4eva  is currently offline Youknowwho4eva
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Ah that is a bead by magic, you should put a link in there so we know what your talking about. http://www.shapeways.com/model/74944/earth__not_so_flat_.htm l?gid=mg

a 20" diameter sphere in sandstone would be pricey. Even if hollowed to 3mm walls (I use .12"). Somewhere around $1834.18 before shipping


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Re: "Earth not so flat" from the shop [message #36965 is a reply to message #36952 ] Wed, 19 October 2011 19:29 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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Happy that you like our Earth Smile
There are two issues reguarding what you asked:
- first the size: if the thickness is maintained to 3mm (which can be done until a certain diameter), the price will be multiplied by 4 each time you double the radius.
- second, I need the data in a correct form: the altitude in level of grey and the color map (including a representation of what is under water). Have a look here. The format for the altitude is quite strange (with negative values in the image): not sure I can use that... And still I have no other color than the blue of the ocean to represent what is under water...

[Updated on: Wed, 19 October 2011 19:30 UTC]


So many things to design, so little time...
Re: "Earth not so flat" from the shop [message #36967 is a reply to message #36951 ] Wed, 19 October 2011 19:35 UTC Go to previous messageGo to next message
avatar Youknowwho4eva  is currently offline Youknowwho4eva
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Is there a way to extract googles model from Google Earth?


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Re: "Earth not so flat" from the shop [message #36969 is a reply to message #36967 ] Wed, 19 October 2011 19:49 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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I am afraid that with Google there would be a problem of license anyways. The Nasa is more permissive.


So many things to design, so little time...
icon14.gif  Re: "Earth not so flat" from the shop [message #36972 is a reply to message #36969 ] Wed, 19 October 2011 20:20 UTC Go to previous messageGo to next message
avatar gibell  is currently offline gibell
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I bought one of these, very nice! How much is the vertical height exaggerated? Must be at least a factor of 10 ...
Re: "Earth not so flat" from the shop [message #36973 is a reply to message #36972 ] Wed, 19 October 2011 20:44 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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Thanks! Smile
The exageration must be more than that:
it is 1 mm for the higher mountain for a diameter 22.5 mm more or less (4.5%)
Let's google... The diameter of the Earth is 12 756km and the Everest is 8.8km (0.069%).
So it is exagerated 65 times...
I am quite sure that the website from the Nasa I mentionned gives all the raw data to achieve the model (including positive values=topography, negative value=bathymetry and you can also have shades of blue for the deepness of the oceans). The problem is more how can you extract them in a useful form...
New link: http://visibleearth.nasa.gov/view_detail.php?id=7862


So many things to design, so little time...
Re: "Earth not so flat" from the shop [message #36974 is a reply to message #36972 ] Wed, 19 October 2011 20:54 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
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Mt Everest, the highest spot on Earth, is less than 6miles tall. The Earth is 8,000 miles in diameter. That's a ratio of 0.00075

If these bumps are 1mm on a 22mm sphere, that ratio is 0.045, for an "exageration value" of 60+ times normal.

It's long been stated.. if the Earth was shrunk to the size of a billiard ball, even the Grand Canyon would look like a mirror-finish.

[Updated on: Wed, 19 October 2011 20:55 UTC]


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: "Earth not so flat" from the shop [message #36990 is a reply to message #36951 ] Wed, 19 October 2011 23:54 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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So what 3D format do you use, COLLADA?
And why do you think negative values would be a problem. I thought any 3D object like a ball could have depressions...
Maybe 44mm diameter would be fine... Smile
And I reckon the shades of blue are not that important... as the actual depressions
Re: "Earth not so flat" from the shop [message #36991 is a reply to message #36951 ] Thu, 20 October 2011 00:04 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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Here is a related link:
Re: "Earth not so flat" from the shop [message #36992 is a reply to message #36951 ] Thu, 20 October 2011 00:06 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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http://www.gebco.net/about_us/news_and_events/gebco_08_googl e.html
Re: "Earth not so flat" from the shop [message #36993 is a reply to message #36951 ] Thu, 20 October 2011 00:24 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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Anyway, I am not able to use Google Earth to see the seafloor. There are some animations to see but you cannot actually see it and explore it in a "Tomb Raider" way... if that sort of makes sense.

[Updated on: Thu, 20 October 2011 00:26 UTC]

Re: "Earth not so flat" from the shop [message #37005 is a reply to message #36993 ] Thu, 20 October 2011 06:07 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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The problem with negative values is that I don't know how to put them in texture.
Anyways, I found 2 textures, one for positive values, one for negative values, so my problem is solved.

And here you are:
index.php?t=getfile&id=11479&private=0

Let me know the size you would like (keep reasonable: a diameter of 2 inches would be 5 times as expensive as the current size) and the amount of "exageration" you would like.

Perhaps it would be nice to have a scale. Say 1:25,000,000 for the Earth and 1:500,000 for the details (5.1cm - that is 2 inches - of diameter and an exageration of 50).
What do you think ?

  • Attachment: NewEarth.jpg
    (Size: 33.29KB, Downloaded 367 time(s))


So many things to design, so little time...
Re: "Earth not so flat" from the shop [message #37007 is a reply to message #37005 ] Thu, 20 October 2011 07:04 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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Well, great job!
But at the moment I would go for a 22mm one, just to get the taste and maybe in a few months time I would adventure to something bigger.
Also I never know which of the colour to choose from. I suppose the most recommended is "Full Colour Sandstone". Is that right? Let us know if you are going to have this new version in the shop.

[Updated on: Thu, 20 October 2011 07:04 UTC]

Re: "Earth not so flat" from the shop [message #37008 is a reply to message #36951 ] Thu, 20 October 2011 07:10 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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Also, I would like it to have a 3mm hole axe from the center of North Pole to the center of South Pole, to better picture that imaginary axes around which Earth rotates. Is that easy to add?
Re: "Earth not so flat" from the shop [message #37009 is a reply to message #37008 ] Thu, 20 October 2011 08:16 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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Yes, sir! 22 mm with 3 mm holes and say +/-1mm for mountains and trenches. Full Color Sandstone is the only material that is multicolor, you are right.
It will be available before the end of the week.

[Updated on: Thu, 20 October 2011 08:19 UTC]


So many things to design, so little time...
Re: "Earth not so flat" from the shop [message #37028 is a reply to message #37009 ] Thu, 20 October 2011 14:56 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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I will order one as soon as it is available.
And maybe more later.
I have ordered the original one in the meantime.
Re: "Earth not so flat" from the shop [message #37030 is a reply to message #37028 ] Thu, 20 October 2011 15:01 UTC Go to previous messageGo to next message
avatar gibell  is currently offline gibell
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Magic, did you make it 2mm thick? It seems now the design rules for Sandstone say 2mm thickness minimum, at least for "supported" areas. I would think a sphere would be a supported structure ...
Re: "Earth not so flat" from the shop [message #37033 is a reply to message #37030 ] Thu, 20 October 2011 15:18 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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I reckon he mentioned 3mm thick, not 2.
Re: "Earth not so flat" from the shop [message #37034 is a reply to message #37033 ] Thu, 20 October 2011 15:23 UTC Go to previous messageGo to next message
avatar gibell  is currently offline gibell
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That's why I mentioned it. The design rules used to say 3mm, but now it is 2mm for "supported areas". Maybe this could reduce the price?
Re: "Earth not so flat" from the shop [message #37035 is a reply to message #37034 ] Thu, 20 October 2011 15:34 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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Yes, you are right, it is 3 mm thick not 2. According to the new rules, 2 mm should be enough (a sphere is quite sturdy).
But I must clarify the fact that for this model the thickness is not constant: the difference between the lowest point and the highest point adds up to the minimal thickness.
So the thickness will vary from 2 mm to 4 mm (currently from 3 mm to 4 mm): so yes, it should be less expensive, anyways.

[EDIT] By the way, if I faithfully follow the new rules, I will have to make two 1.5 cm holes instead of 3 mm... Mmmh...


[Updated on: Thu, 20 October 2011 15:44 UTC]


So many things to design, so little time...
Re: "Earth not so flat" from the shop [message #37037 is a reply to message #37035 ] Thu, 20 October 2011 15:52 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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This is a bit off-topic (and I hope the moderators don't mind).
"Rainwater harvesting on the sea: a new sustainable water resource"
http://www.tandfonline.com/doi/abs/10.1080/02508060.2010.533 347

This puts me to think in how much material and what the best material woud be to harvest water from rain in large scale.
If you know a bit about 3D printing, materials and shapes, this question could interest you: what material and shape would best suit such large scale harvesting of water from rain.
I can imagine some telescopic arms rising and unfolding a wide area of cloth that could catch the water from rain...
Re: "Earth not so flat" from the shop [message #37038 is a reply to message #36951 ] Thu, 20 October 2011 15:56 UTC Go to previous messageGo to next message
avatar bicomplex  is currently offline bicomplex
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Do you mean 1.5mm holes. Ermm..you said 1.5cm... Shocked
I hope that's a mistake.
1.5mm holes is fine but 1.5cm, that's not!!!
Re: "Earth not so flat" from the shop [message #37042 is a reply to message #37038 ] Thu, 20 October 2011 16:38 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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Yep. Probably, we will forgot this rule for this model... Rolling Eyes


So many things to design, so little time...
Re: "Earth not so flat" from the shop [message #37043 is a reply to message #37042 ] Thu, 20 October 2011 16:47 UTC Go to previous messageGo to next message
avatar mctrivia  is currently offline mctrivia
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also has to be 24 mm in all axis now if I remember corectly.


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Re: "Earth not so flat" from the shop [message #37048 is a reply to message #37043 ] Thu, 20 October 2011 17:39 UTC Go to previous messageGo to next message
avatar stannum  is currently offline stannum
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The 24mm is slightly off, bounding box sides have to add to at least 65mm, as in a cube of 22*22*22 or a tile of 5*30*30. Holes to remove material have to be 25mm for one, 15mm for two and 10mm for four. The new coating improved the colors and reduced wall thickness by 33%, but raised other minimums by a lot.

Anybody knows if material can be trapped?
Re: "Earth not so flat" from the shop [message #37139 is a reply to message #37048 ] Fri, 21 October 2011 21:56 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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I think the question about material being allowed to be trapped for FCS has been asked more than once, without answer...
In the meantime, I finished the model.
New Earth
index.php?t=getfile&id=11535&private=0

  • Attachment: NewEarth2.jpg
    (Size: 27.37KB, Downloaded 224 time(s))


So many things to design, so little time...
Re: "Earth not so flat" from the shop [message #37141 is a reply to message #37139 ] Fri, 21 October 2011 22:07 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
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That REALLY looks good!


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: "Earth not so flat" from the shop [message #37144 is a reply to message #37141 ] Fri, 21 October 2011 22:16 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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Thanks Stony.
And it is less expensive than the previous one (which was solid, not hollowed)...


So many things to design, so little time...
Re: "Earth not so flat" from the shop [message #37145 is a reply to message #37141 ] Fri, 21 October 2011 22:18 UTC Go to previous messageGo to next message
avatar erckgillis  is currently offline erckgillis
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Awesome job guys! great discussion and I learned a bunch just reading the thread!

May have to get one of these and try some new ideas... Very Happy


Ed
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Re: "Earth not so flat" from the shop [message #59327 is a reply to message #37145 ] Fri, 28 December 2012 21:32 UTC Go to previous message
avatar Magic  is currently offline Magic
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I ordered a copy of the New Earth very recently.
The quality of Full Color Sandstone has really improved.

Here are two pictures:
http://images1.sw-cdn.net/model/picture/674x501_362981_710797_1355677987.jpg
http://images1.sw-cdn.net/model/picture/674x501_362981_710796_1355671089.jpg

And you can see even more in this video.


So many things to design, so little time...

 
   
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