jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on May 30, 2013 9:01:25 GMT -5
This is a 16 pound load.I was showing the odd ratio that resulted in a great polish.The smalls are basically media.One week in 220,one in 600 and one in polish.Sugar used in polish,put no plastics.Barrel is 6 inches diameter turning 25 per minute. This coral has a very nice silicification on the outside and white pulp in the center resulting in a phantom.
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on May 30, 2013 15:12:56 GMT -5
I can see 5 or 7 of those strategically mounted on textured steel rods over a Jamesp industrial base. The pieces mounted floating in an eye-pleasing pattern, curve, universe.
Like a small asteroid belt.
Sold! I'll take one! ;D
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Deleted
Deleted Member
Member since January 1970
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Post by Deleted on May 30, 2013 15:13:52 GMT -5
You need new cheaters.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on May 30, 2013 18:39:44 GMT -5
The work season has destroyed them.
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Post by Drummond Island Rocks on May 30, 2013 19:10:33 GMT -5
its hard to believe those are all the same material. whats you plan for large ones?
chuck
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on May 30, 2013 19:24:01 GMT -5
I thought about door knobs for a beach cottage.May sell as 'fancy'fossils.Will collect these selectively now that i now what to look for.Digging thru them aggravates the better half....
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herchenx
Cave Dweller
Member since January 2012
Posts: 3,360
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Post by herchenx on May 30, 2013 19:53:48 GMT -5
That is a cool load. Are the small filler ones the same material?
Sent from my phone.
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Post by Bikerrandy on May 30, 2013 19:58:42 GMT -5
Those are really cool!! I love the random shapes
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on May 30, 2013 20:54:58 GMT -5
Yes the filler is the same.They had a fracture or divot i considered rejects.That coral acts like 7.5 moh(it's very hard). The outer layer is consistant and rarely fractured.But it is a layer.So the rough grind is all about the outer 1/16 to 1/4 inch.Average layer variations are in the outside 1/8 inch of the silicified material.So coarse grind is 3-10 days depending on that layer thickness.Pulling them constantly and replacing them to avoid grinding past the skin.Some with thick skins have to stay in coarse for 2-3 weeks. Am anxious to get back and collect more.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on May 30, 2013 21:20:34 GMT -5
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Post by paulshiroma on May 30, 2013 21:52:32 GMT -5
Interesting stuff there, James. And really good pics. What kind of camera are you using?
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on May 30, 2013 22:16:24 GMT -5
A 50 watt flood lamp in a $9 desk lamp is the lighting Paul.The body is a used Nikon D70.Lense is good one.Nikon 24-85 f 2.8-4.0 AF set on macro position.1/80 f7-f10 man setting WB=incandecsent held 7-12 inches from lense.Camera and lense hand held.Usually auto focused.Light angle about 45 degrees from left;subject positioned to minimize glare. It as a recipe arrived at by trial and error and laziness.I got a fixed macro.But requires tripod if doing 1:1 to 1:3.I cropped those pics only slightly.Holding subject 10-12 inches away from lense makes hand holding easier(to avoid blurr).
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riverrock
fully equipped rock polisher
Member since April 2010
Posts: 1,395
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Post by riverrock on May 31, 2013 17:28:49 GMT -5
One day I would like to try them.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,397
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Post by jamesp on May 31, 2013 18:21:55 GMT -5
It can happen.
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