jamesp
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Post by jamesp on Sept 13, 2014 9:50:01 GMT -5
Looking at using crushed and/or broken glass for filler for tumbling obsidian and glass. Looking at 220, 400 or 500, 1000 and then 1 micron Rock Shed polish. So 4 finishing steps after coarse. Fooling with the glass filler. Looking for softer glass. I want filler softer than obsidian and most glass. This is 3/8" table top found on the side of the road. It must be tempered since it broke into 2-3 inch pieces. It is very soft. It is too big for filler, but is by far the softest glass I have ever tumbled. This is 1/8" window glass, also tempered, one tap with the hammer and presto, instant filler. Tumbling it now to see how soft it is. This is some hard glass. It rounds slowly. Am concerned that it will scratch softer glass and obsidian(obsidian soft). It is crushed at a glass recycling plant to standard 1/4", 3/8" and 1/2" sizes for remelt. Basically bottle glass. Close to scale size. Trying to find a chart that gives the hardness of different glass. Not having any luck. The Schott test is used to measure the grind ability of glass, it would be valuable test for rock types that are good for tumbling: Grindability is very important for the grinding process. Here is the method used by SCHOTT, twenty samples of the glass to be classified are ground for 30 seconds in a standardized diamond pellet tool under predetermined conditions. Then the samples are compared by weighing the samples and considering the density of the removed volume of the glass with that of a reference glass. For a complete headache, a Wiki article on glass. Glass complicated... en.wikipedia.org/wiki/Glass
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jamesp
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Member since October 2012
Posts: 36,187
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Post by jamesp on Sept 13, 2014 13:44:02 GMT -5
To break up the thick glass I boiled it in water and dropped in ice water, then reversed, cold to hot. Till the cracks were going to make a good filler size. Until it was fractured for safer reduction w/a hammer.
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Post by rockpickerforever on Sept 13, 2014 13:48:41 GMT -5
Wow, the hot/cold/hot/cold process is a great idea! That's using your noggin for something. Get your obsidian process dialed in James, You've got some work coming up!
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jamesp
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Posts: 36,187
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Post by jamesp on Sept 13, 2014 16:45:27 GMT -5
Wow, the hot/cold/hot/cold process is a great idea! That's using your noggin for something. Get your obsidian process dialed in James, You've got some work coming up! I must be serious, ordered more aluminum oxide grades. I popped the first one of those and had 3 glass splinters. Heat/cold thing took care of that. Have you been to Glass Butte lately or did another one of your neighbors call and let you fill your truck up for free ? That would not happen on this side of the river. Nary a one of us has rock collections like them westerners. You guys have it made. Did she serve refreshments as you loaded your trucks ? provide beer and live music...A load all you want Party PARTY TILL YOU DROP !!!!!
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Post by rockpickerforever on Sept 13, 2014 17:45:10 GMT -5
Glass splinters can be nasty. Worse than metal splinters, maybe even worse than the glochids on beavertail cactus. No-see-ums. Best be careful when you go to break the obsidian into chunks, that sh!t'll slice you up.
Yes, it was like a party atmosphere, was maybe a dozen people throughout the day. It was sort of like a competition, to get the good stuff first, but it was all amicable. No, she did not serve drinks, refreshments or appetizers. Had to get those after getting home. We did have someone offer to sing, we passed on it, lol. (Actually, I had to keep telling him to quit! He was just having way too much fun.) At least three or four of the people there said they couldn't sleep the night before, because they were so excited. It was a recurring theme.
I'm just so glad it was last Saturday, and not today. Since it was located a good 15 miles closer to the ocean, it was probably 10 degrees cooler than when we got home. But today, even the coast is hot. It was 98 degrees here, last I looked. And your humidity wants to come home to you, James. Good thing, I don't want it here! Will have a few more days of this, yuk.
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jamesp
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Member since October 2012
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Post by jamesp on Sept 13, 2014 18:48:55 GMT -5
Sounds like fun for all. I like the way you sat in the middle of the pile. Dive in Jean. Hope you didn't cover up too many rocks just kidding. You guys are a well organized group. Too fun. Seasons changing here. high 70's and low 60's next week. 66 this morning, bout got pneumonia cough cough. Time to start rut, wondered why I was rubbing my head on a tree this morning.
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Post by rockpickerforever on Sept 13, 2014 19:06:50 GMT -5
The woman that held this free rock pick had already done some liquidating previously. She held sales over a couple of years and d got rid of her dad's stuff, some before he died, the rest of it after. We went to the last sale she had, picked up some slabs ($3 for a soda flat of them), specimens for like $1 each. And it hadn't been advertised this way in advance, but all the rocks on the ground in the backyard were free. I got bucket loads of rough back then. I guess now her husband has since passed, so she decided to get rid of most of the rocks at her home. She did keep a few of them, I'm told. I understand she had held at least one rock sale at her house recently, but I don't think much of it went. That pile that I'm sitting on was about 4 x 8 x 3 feet tall, enclosed in a corral (not to be confused with coral, lol!). There were rocks there that had not been touched in years, that's why so much good stuff still there. We dug to the bottom and thoroughly turned that pile! It was like Christmas... Try not to hurt the trees with your head. How soon does deer season start? I'll bet your dogs can't wait .
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jamesp
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Member since October 2012
Posts: 36,187
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Post by jamesp on Sept 13, 2014 19:18:07 GMT -5
She called the right people this time. Human gophers Bow season starts in a couple weeks I think. dogs gave up on them, deer heads into black berry brambles and grease right thru them, poor dogs get hung by the hide full of thorns
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Post by rockpickerforever on Sept 13, 2014 20:16:30 GMT -5
I wasn't talking about the dogs chasing after the deer, I was talking about kitchen time Very spoiled dogs love venison jerky!
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jamesp
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Member since October 2012
Posts: 36,187
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Post by jamesp on Sept 13, 2014 21:29:02 GMT -5
'The dogs like this.
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Fossilman
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Post by Fossilman on Sept 13, 2014 22:07:06 GMT -5
Looking great James....Liking the idea......Jean,,those are some lucky dogs....
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quartz
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breakin' rocks in the hot sun
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Post by quartz on Sept 13, 2014 22:16:32 GMT -5
I built a sandblasting cabinet several years ago, went hunting for best glass for the window. A couple glass outfits told me plain old window glass is hardest of the flat stuff, and tempered is the softest.
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jamesp
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Post by jamesp on Sept 13, 2014 22:28:14 GMT -5
I built a sandblasting cabinet several years ago, went hunting for best glass for the window. A couple glass outfits told me plain old window glass is hardest of the flat stuff, and tempered is the softest. Ok then. Thanks for that info Larry. Not easy to find info about the hardness. I boiled the 12 pounds of the bluish table glass and cooled it fast in ice water. Stuck it in a pillow case and popped it w/a hammer. It's tumbling. Lot easier to handle after it's ground down. Did you break glass for blasting ?
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quartz
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breakin' rocks in the hot sun
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Post by quartz on Sept 13, 2014 23:26:25 GMT -5
Nope, too hard to crush it all small enough. Used silica, and made a really effective filter so I didn't breath any. Filter, filter, filter..., then vent outside.
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jamesp
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Post by jamesp on Sept 14, 2014 7:01:25 GMT -5
Nope, too hard to crush it all small enough. Used silica, and made a really effective filter so I didn't breath any. Filter, filter, filter..., then vent outside. Have you heard of using a pressure washer for sand blasting ? Several types of sand here. Smooth sand is dredged from the river. Sharp sand from the granite crushing industry. Smooth sand for mortar, sharp sand for concrete and mixing with gravel to interlock it for road beds, called crush and run. Granite dust for plant nutrients. Lime of many particle sizes for soil PH adjustments since north Georgia soil is usually too acidic. Florida sand in Ocala National forest is called sugar sand and is about like 180 grit, is silica. Will sink your vehicle, wide tires needed.
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quartz
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breakin' rocks in the hot sun
Member since February 2010
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Post by quartz on Sept 14, 2014 22:29:50 GMT -5
I've never heard of introducing sand into a pressure washing process, probably good for dust control, ceramic nozzle would be a must. Unless operator and process are isolated from each other, PPE requirement would be a tough one. Sandblasting suits I've seen don't like water, and pressure washing on a hot day is refreshing, but not with grit in it.
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jamesp
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Member since October 2012
Posts: 36,187
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Post by jamesp on Sept 14, 2014 23:26:49 GMT -5
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quartz
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breakin' rocks in the hot sun
Member since February 2010
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Post by quartz on Sept 15, 2014 22:52:23 GMT -5
Mr. Larry has built a dry blaster, one can be assembled in about 15 minutes {assuming mtl. is on hand} using common pipe, fittings, and some tubing. Worked quite well to fill the need in an AWSHT situation. I don't know if introducing grit at a right angle to a water flow would work, would have a wye fitting on hand.
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jamesp
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Post by jamesp on Sept 15, 2014 23:01:41 GMT -5
Mr. Larry has built a dry blaster, one can be assembled in about 15 minutes {assuming mtl. is on hand} using common pipe, fittings, and some tubing. Worked quite well to fill the need in an AWSHT situation. I don't know if introducing grit at a right angle to a water flow would work, would have a wye fitting on hand. You going to build one ?
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quartz
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breakin' rocks in the hot sun
Member since February 2010
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Post by quartz on Sept 15, 2014 23:08:19 GMT -5
Nope, don't have a pressure washer, no need for one.
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