Deleted
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Post by Deleted on Feb 5, 2014 20:19:17 GMT -5
I wanna learn the secrets for producing these Interestingly the 1894 treatise was reprinted 100 years later in 1994! $25 too much for me at the moment. Sad. hmphhh...
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gemfeller
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Member since June 2011
Posts: 3,828
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Post by gemfeller on Feb 5, 2014 20:29:53 GMT -5
Ed, I've wondered how the wheels were made too but have never been able to find out. I've always assumed they were quarried and rounded with various pounding tools -- sandstone is pretty soft. But I don't really know. They have a very helpful travel bureau and the image is from a CD I picked up there. It has the usual Chamber of Commerce-style images but tells the story of the cities and region pretty well. The local pastries are deadly good and there's a little bakery right across from the diamond Bourse where my son and I munched on them at a pleasant outdoor table while watching the gem traders coming and going. I was told that African gem rough dealers often gather there and was hoping to run into one or more to try to buy some parcels. No luck that day. Besides I probably couldn't have afforded the quantities they're used to selling. Here's an image of the Bourse. Some really big deals go down there:
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gemfeller
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Member since June 2011
Posts: 3,828
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Post by gemfeller on Feb 5, 2014 20:36:06 GMT -5
I wanna learn the secrets for producing these Scott, I saw a documentary about that a year or so ago. They actually made a sphere out of the same rock the old ones are made of. The process involves repeated pounding with a harder rock and using a flat rock to sand out uneven areas. It's very similar to the way they think the Incas made such precise building blocks for their cities. The procedure went much faster than I'd have though possible. They showed that some of the old spheres aren't really all that spherical, also. I guess some old-timer's arms got tired.
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Deleted
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Post by Deleted on Feb 5, 2014 21:06:44 GMT -5
I need to find the "rock-umentary"! Thanks Rick.
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jamesp
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Member since October 2012
Posts: 36,204
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Post by jamesp on Feb 5, 2014 21:23:45 GMT -5
I wanna learn the secrets for producing these Interestingly the 1894 treatise was reprinted 100 years later in 1994! $25 too much for me at the moment. Sad. hmphhh... Jean and the martians made those balls.
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Post by mohs on Feb 5, 2014 21:33:14 GMT -5
secret of Sisyphus
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gemfeller
Cave Dweller
Member since June 2011
Posts: 3,828
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Post by gemfeller on Feb 5, 2014 21:49:34 GMT -5
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Post by pghram on Feb 6, 2014 11:38:13 GMT -5
Neat post, thanks everyone. It took more time but they had more time. All of our "labor-saving-devices" and running us into the ground.
Rich
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Post by rockpickerforever on Feb 6, 2014 18:30:22 GMT -5
I wanna learn the secrets for producing these Interestingly the 1894 treatise was reprinted 100 years later in 1994! $25 too much for me at the moment. Sad. hmphhh... Jean and the martians made those balls. James, don't go telling all my secrets, lol!
Scott, what Rick gemfeller said - beating on them with smaller stones. Take a step back, evaluate, and beat it some more where needed.
In addition to the link that Rick posted here's a couple more, just fyi. (Hope all these links work okay. Can't tell until I hit "Create Post.")
CNN Caribbean News Network MYSTERIOUS SPHERICAL STONES FOUND IN COSTA RICA cnnislands.com/news/story.php?id=1192
Ancient Wisdom The Costa Rica stone balls www.ancient-wisdom.co.uk/costarica.htm has map with locations of stone balls
Wiki Stone spheres of Costa Rica en.wikipedia.org/wiki/Stone_spheres_of_Costa_Rica
For a tour company, this one has some good info
CRS Tours Archeology in Costa Rica www.crstours.com/costa-rica-info/archeology-in-costa-rica/
And a couple videos on YouTube: "Petrospheres or stone balls are pre-Columbian carvings found only in Costa Rica (One has been found just over the border in Panamá). They are almost perfectly spherical, and many are finely polished some are a more than 2 metres (six feet) in diameter. The largest found to date weighs over 15 tons. They were carved without the aid of metal tools, and some were transported hundreds of kilometres despite the Indians having no wheel nor beasts of burden. This is a short documentary in two parts each about 8 minutes long."
link part 1 link part 2
Some information, if you have the time to sift through it...
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Mark K
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Member since April 2012
Posts: 2,617
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Post by Mark K on Feb 6, 2014 23:24:36 GMT -5
yep lots of slurry if your ever in prison with dental floss and tooth paste you could saw the steel bars I only have another 30 years and I should be free! good question! Until we catch you and move you to another cell.
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bushmanbilly
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Member since October 2008
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Post by bushmanbilly on Feb 7, 2014 17:33:48 GMT -5
Cab-ersize, yours for only 3 easy payments.
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bushmanbilly
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Member since October 2008
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Post by bushmanbilly on Feb 8, 2014 10:51:58 GMT -5
Whoops I grabbed the unedited version. sorry.
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Post by 1dave on Feb 8, 2014 22:00:30 GMT -5
You need another chain to run the tumblers.
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Post by pghram on Feb 10, 2014 11:02:58 GMT -5
This might be the only way to get me to excercize more, if it cut rock, that is.
Rich
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rocksolid
off to a rocking start
Member since January 2014
Posts: 15
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Post by rocksolid on Feb 10, 2014 21:31:16 GMT -5
Ok thanks to all who gave helpful input. I have an old singer sewing machine, the top part is broke but the treadle bottle half still operates and I was wondering what I was going to do with it. Guess I know now.
oh and bushmanbilly, I like how you have a water bottle on that contraption you posted. Probably will come in handy.
Thanks again all!
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