jamesp
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Post by jamesp on Jul 4, 2017 12:09:13 GMT -5
Bulk grit: Took about 15 minutes to screen 60 pounds of bulk grit into 3 different sizes using basic tools and catch pans. notjustoneThere may be mixed opinions about using such big chunks for tumbling. So far the ole 'grit breakdown' trick is working fine. The bigger chunks slower to break down of course. Seem to time release. Break down by weight, about 45% 30-40-50-60-70-80 grit, about 35% 2-4-6-8 grit and about 20% the big stuff. I mixed the 30-40-50-60-70-80 in with the bucket of purchased 30 grit. Will experiment w/the bigger stuff. screening tools and separated batches: Discoidal's: Discoidal's are a Native American artifact(gaming stones ?). They can be very well ground to tight tolerances unlike mine. I need to figure out a roller jig to increase accuracy of arcs. Some strange Rio material, 2 sides and an edge view: This one is much bigger and is only rough shaped. May saw the back face off where the geodes are: Dry: And pulled these from AO 80 after 48 hours in vibe and started in AO 14,000 The Vibrasonic will be busy for a while. Got a crop of big rocks finishing. Need to make a third divider so 3 can be run at a time.
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jamesp
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Member since October 2012
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Post by jamesp on Jul 4, 2017 12:30:31 GMT -5
Our Native people displayed some of their finest lapidary skills making discoidal's. More of an east of the Mississippi thing. Authentic Drummond Island discoidal Well made ones, early lapidarians quartzite. With out diamond cutters ?? Ohio material I have found a few like this, one out of white quartz and nice. Most in central Georgia near Ocmulgee culture.
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Post by coloradocliff on Jul 4, 2017 13:02:15 GMT -5
Big, shiny rocks Jim What's the chert looking material under your biggies in the pictures? Never heard of discoidals before you put this up. Thanks for more education .
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jamesp
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Member since October 2012
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Post by jamesp on Jul 4, 2017 13:32:26 GMT -5
Big, shiny rocks Jim What's the chert looking material under your biggies in the pictures? Never heard of discoidals before you put this up. Thanks for more education . Heat treated Flint Ridge. It got a bit too hot, so the red. Damaged. Some is a slab of Kentucky agate from Randy. It got too hot too. I don't know if discoids are found much out west. Probably related to Mississippian Culture 300 to 1100 years ago. Georgia had this culture, mounds like Etowah and Ocmulgee. Burials reveal savage behavior too(child sacrifice) www.fallsoftheohio.org/MississippianCulture.html
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Post by coloradocliff on Jul 4, 2017 14:07:29 GMT -5
jamesp Over 550 f hot? What did it do ? Micro fracturing. Maybe brought the temp up too fast? You have a kiln and are careful, maybe too occupied with the other 150 ongoing projects and running a business too. Grin. Have some flint ridge am getting to putz with but need a bigger pile to really know that beautiful material. Thinking a road trip to Nether's farm. Thanks for the link. Have already googled a couple and think this is one.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
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Post by jamesp on Jul 4, 2017 15:23:37 GMT -5
jamesp Over 550 f hot? What did it do ? Micro fracturing. Maybe brought the temp up too fast? You have a kiln and are careful, maybe too occupied with the other 150 ongoing projects and running a business too. Grin. Have some flint ridge am getting to putz with but need a bigger pile to really know that beautiful material. Thinking a road trip to Nether's farm. Thanks for the link. Have already googled a couple and think this is one. Probably hit 650 when doing coral. Should have cooked it separate and knew better. It was just a few chunks. Next time 500. Maybe 550. Me not busy no more, plant biz is off the plate. Out on a motorcycle ride wasting away. Parked at Starbucks sipping coffee.. Shoulda gone to lake and aggravated in laws. Peachtree City Ga. City of golf carts. Upper crusters , cool concept town. Large population of Japanese Americans. Great schools. Most fun, rent golf carts and bar hop. Speed around. All day rental $40. Must be 100 miles of trails. Usually get lost, one time till 5AM. 4 drunks in a cart lol. Not sure about the GCUI rules. They seem to look the other way if staying on back trails. Never been to Nethers. Sounds a dream. Stock up whilst there. Long haul from your hood. Classic Native man knapping stone. After cooking it I see why. Super chip ability with slightest tap. Easy control. Does CO plant biz slow down summers ? After June 1 when kids out of school ? Or heat turn it off ?
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Post by wigglinrocks on Jul 4, 2017 18:38:00 GMT -5
Those are some seriously nice tumbles .
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,561
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Post by jamesp on Jul 4, 2017 19:23:11 GMT -5
Those are some seriously nice tumbles . Need a barrel with a bigger opening wigglin. 4 inch PVC is the ID of the barrel mouth. Loraine or Thumler would do it.
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Post by wigglinrocks on Jul 4, 2017 20:26:59 GMT -5
Those are some seriously nice tumbles . Need a barrel with a bigger opening wigglin. 4 inch PVC is the ID of the barrel mouth. Loraine or Thumler would do it. Have a pair of QT 66s but don't do the polish in them and I am limited for size of rock in the GY ROC . Biggest I have done is a bit over a half pounder . Lot of trouble keeping a proper action going . But to think of it , I was trying to keep a normal moisture going also . The donut shaped bowl limits the size rock also .
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Post by coloradocliff on Jul 5, 2017 2:07:53 GMT -5
jamesp Over 550 f hot? What did it do ? Micro fracturing. Maybe brought the temp up too fast? You have a kiln and are careful, maybe too occupied with the other 150 ongoing projects and running a business too. Grin. Have some flint ridge am getting to putz with but need a bigger pile to really know that beautiful material. Thinking a road trip to Nether's farm. Thanks for the link. Have already googled a couple and think this is one. Probably hit 650 when doing coral. Should have cooked it separate and knew better. It was just a few chunks. Next time 500. Maybe 550. Me not busy no more, plant biz is off the plate. Out on a motorcycle ride wasting away. Parked at Starbucks sipping coffee.. Shoulda gone to lake and aggravated in laws. Peachtree City Ga. City of golf carts. Upper crusters , cool concept town. Large population of Japanese Americans. Great schools. Most fun, rent golf carts and bar hop. Speed around. All day rental $40. Must be 100 miles of trails. Usually get lost, one time till 5AM. 4 drunks in a cart lol. Not sure about the GCUI rules. They seem to look the other way if staying on back trails. Never been to Nethers. Sounds a dream. Stock up whilst there. Long haul from your hood. Classic Native man knapping stone. After cooking it I see why. Super chip ability with slightest tap. Easy control. Does CO plant biz slow down summers ? After June 1 when kids out of school ? Or heat turn it off ?
Southern Texas eye candy.
www.flickriver.com/photos/97769244@N00/popular-interesting/
In case you aren't familiar with Roy, he is the guru of Flint Ridge,(Vanport cherts) Heat treating by a pro who has done many batches. 2 part video.
Here's that Nethers Farm material. Look athe cabs next 3 pages. WOW !
mcrocks.com/ftr10-1/StreeterSeptember2010.html
The second torn rotator in just over a years told me it was time to sell the 78 shovelhead low-rider, Hard to grip the throttle and front brake so said "when". " Probably get a 4 wheeler Razor .. with cup holders. You got a real good deal on the golf carts.. Cruise around safe and soused. hehehehe Ohio isn't that far. 18 hours from Detroit to my house. One shot. Ohio is closer. That big ole 7,000 pound long bed dually just flies and holds the road like no other. Lots of room and capacity with the long bed dually hauling tail. Made it across Iowa 3 1/2 hrs, long ways in the middle of the night. THe smarty 2 programmer gets the mileage to just under 20 and that's at a high rate of speed. Can haul a couple tons of rock and still jump right out to 120 when I ask it for it. Yep Bro. Not far. Sales slow down because the people have all planted their annual flowers and hanging baskets, the tourist towns like Telluride, Crested Butte and Aspen have their town really heavily planted and in full bloom. Still sell shrubs, perennials and some annuals but mostly are taking cuttings on the shrubs and trees etc. for next year. All the gallon and quart perennial plants are growing quietly in one of the back greenhouses and waiting September to plant into their ultimate container. Last years shrub cuttings from 4 inch to gallons, last year's gallons to 3 and 5 gallon. Lots of ordering, planning and soil mixing going on. Do a lot of maintenance and building this time of year.
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jamesp
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Member since October 2012
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Post by jamesp on Jul 5, 2017 3:12:02 GMT -5
coloradocliff: "The supraspinatus muscle runs along the top of the shoulder blade and inserts at the top of the arm or humerus bone and is one of the four rotator cuff muscles." I tore this muscle in 1998 completely in half. In prime of a physical plant biz. Most common rotator cuff tear. I have been successful at rehabilitation on and off for years. I re-injured worst in 2013 and was scheduled for surgery but could never find a 5 month recovery period. It took 2 years but I babied it and then started back to using it in the range that caused no pain till the muscles started to strengthen. Over the past 20 years I re-injured it and had 6 month to one year 'light use' periods. Be damned if it did not come back every time. Best results was with (light)weight therapy at a gym with diverse variety of weight machines. Use as many machines as possible that did not cause pain. Rehabilitate with strength. I am suspicious of the three doctors over the years that acted as if emergency surgery was warranted. Their 6 MRI's. Friend's having bad experiences w/the cuff surgery... Friend's injuring their shoulders with out tears too. No doubt the supraspinatus is torn slap in half and another of the four is damaged. Apparently many men past 50 have full tears in that tendon and do perfectly well. Be careful what those jokers tell you. I know I functioned very well for 20 years as a young man less 3-4 down periods from injuries due to doing something abusive or stupid. 2013-2015 the shoulder was in pain effecting sleep. I waited it out and avoided sleeping on it. Two years now and it never bothers me. I have to avoid certain motions. There was 3 times over 20 years I thought surgery was going to be the only way. I am all for surgery, but not sure cuff surgery is always the best choice. Been looking at Matt Dillon's Texas finds for years. He would be one of the best authorities on the origins of Texas agates and woods. He has hunted many of the upstream slopes of the Rio drainage over the years. Even back when Mexico was safe. He is the Texas man. Hits Falcon Lake regular, even lives close to it. I cook coral at 100 pounds at a time. I can get 1500 pounds of it in a 3 day trip since it is close. So I focus on coral. I wish I could go fetch Flint Ridge in those quantities. Down here in the deep south coral is the one of the most sought after heat treats. So I stick with what is available in large quantity. And the coral involves a cool boat safari. Get away from the farm trip. Variety from Tampa FL. in Bahama like waters to Valdosta GA. in jungle waters. Dumb provincial southerner lol.
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jamesp
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Member since October 2012
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Post by jamesp on Jul 5, 2017 4:05:44 GMT -5
Need a barrel with a bigger opening wigglin. 4 inch PVC is the ID of the barrel mouth. Loraine or Thumler would do it. Have a pair of QT 66s but don't do the polish in them and I am limited for size of rock in the GY ROC . Biggest I have done is a bit over a half pounder . Lot of trouble keeping a proper action going . But to think of it , I was trying to keep a normal moisture going also . The donut shaped bowl limits the size rock also . Well, you hit the nail on the head mentioning vibe space. Never attempted rotary polishing one pound + rocks. Close to it. Problem is, it is best to put just one large rock in the rotary to get a polish. Takes forever. The Vibrasonic has a smoking polish on them in 3 days straight out of rotary in SiC 30. Using dividers I can do 3 at a time up to 1.5 pounds or probably a single long 8 pounder if it will fit past the mouth of the Vibrasonic. It is the Vibrasonic that is making the big rocks attain polish quick and easy. I know what you are saying about the torus shape. It takes a big donut to do a 2 pound rock. Basically, each compartment on the Vibrasonic when divided into 3 sections is 3 cylinders 6 inches in diameter and 4.5 inches wide. With a 4 inch wide entry. The big rock can take up almost 50% of the cylinder volume, smalls the rest. If you drop down to 1/4" to 1/2" rounder smalls(ha, ball bearings), the big rock could take up even more volume and not jam. The size of the bigger rocks dictates the size and shape of the media(smalls). It turns totally into a mechanical game. Avoid-the-jam. Since the Vibrasonic base will easily vibrate a 35 pound hopper(mine is 14 pounds) another long hopper with say three cylinder type compartments side-by-side could be fabricated. Should be able to do three 6 to 8 pound rocks side by side with ease. Problem is pre-grinding a 6 pound rock. Patience of Job. Much less finding a rock that big with out serious defects. You are lucky to find a 2 pound cobble on the Rio without one or two serious fractures or pock marks running deep into the rock. I could saw 4 inch cubes out of Georgia coral heads w/out a single defect all day long. They are a dime a dozen but many have no personality. A big shiny gray ball/tumble, so what. Excepting those with geode type pseudomorphs in them. (That just gave me an idea). Bloodstone, Mary Ellen, Sumatra Flame and other materials that come in large sizes w/out defects that could be sawn to large tumbles are the way to go. Anyway, that is the synopsis of big rock tumbling- the Vibrasonic is about necessary.
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Post by wigglinrocks on Jul 5, 2017 10:01:11 GMT -5
Have a pair of QT 66s but don't do the polish in them and I am limited for size of rock in the GY ROC . Biggest I have done is a bit over a half pounder . Lot of trouble keeping a proper action going . But to think of it , I was trying to keep a normal moisture going also . The donut shaped bowl limits the size rock also . Well, you hit the nail on the head mentioning vibe space. Never attempted rotary polishing one pound + rocks. Close to it. Problem is, it is best to put just one large rock in the rotary to get a polish. Takes forever. The Vibrasonic has a smoking polish on them in 3 days straight out of rotary in SiC 30. Using dividers I can do 3 at a time up to 1.5 pounds or probably a single long 8 pounder if it will fit past the mouth of the Vibrasonic. It is the Vibrasonic that is making the big rocks attain polish quick and easy. I know what you are saying about the torus shape. It takes a big donut to do a 2 pound rock. Basically, each compartment on the Vibrasonic when divided into 3 sections is 3 cylinders 6 inches in diameter and 4.5 inches wide. With a 4 inch wide entry. The big rock can take up almost 50% of the cylinder volume, smalls the rest. If you drop down to 1/4" to 1/2" rounder smalls(ha, ball bearings), the big rock could take up even more volume and not jam. The size of the bigger rocks dictates the size and shape of the media(smalls). It turns totally into a mechanical game. Avoid-the-jam. Since the Vibrasonic base will easily vibrate a 35 pound hopper(mine is 14 pounds) another long hopper with say three cylinder type compartments side-by-side could be fabricated. Should be able to do three 6 to 8 pound rocks side by side with ease. Problem is pre-grinding a 6 pound rock. Patience of Job. Much less finding a rock that big with out serious defects. You are lucky to find a 2 pound cobble on the Rio without one or two serious fractures or pock marks running deep into the rock. I could saw 4 inch cubes out of Georgia coral heads w/out a single defect all day long. They are a dime a dozen but many have no personality. A big shiny gray ball/tumble, so what. Excepting those with geode type pseudomorphs in them. (That just gave me an idea). Bloodstone, Mary Ellen, Sumatra Flame and other materials that come in large sizes w/out defects that could be sawn to large tumbles are the way to go. Anyway, that is the synopsis of big rock tumbling- the Vibrasonic is about necessary. Well thanks for the wake up slap up side the head . Seriously , now that I think about it , I was running a few largeish rocks in with the bigger rock which were adding to the jam up problem . Will have to play around with different size smalls . It is too bad granite is not a good candidate for tumbling , boring and undercutting issues . Could haul tons of nicely water worn 1-3 pounders from the big lake . Haven't come up with a real good use for them yet or I would .
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jamesp
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Member since October 2012
Posts: 36,561
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Post by jamesp on Jul 5, 2017 12:50:04 GMT -5
wigglinrocksSmall smalls goes for rotaries and vibes. especially vibes. Yes, a shame about granite. However, gneiss can be very similar or better in color and a bunch harder.
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Post by fernwood on Jul 5, 2017 15:59:07 GMT -5
Discoidal's are very cool. I have a few from Wisconsin, but they are no where as pretty as these. Yes, it was for a game. The Youth Camp near where I lived had several complete sets. The Naturalist there would usually facilitate using them with campers.
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jamesp
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Post by jamesp on Jul 6, 2017 2:15:50 GMT -5
Discoidal's are very cool. I have a few from Wisconsin, but they are no where as pretty as these. Yes, it was for a game. The Youth Camp near where I lived had several complete sets. The Naturalist there would usually facilitate using them with campers. Most found here are not so fancy fernwood. Most are functional and of lighter colored stone probably for target visibility. Most found around here are from quartzite river cobbles. The river patina clearly ground off in the shaping process. Found enough of them at camp sites to know they are not coincidental. Some rather crude but just as functional. Some of those fancy ones are found in burials and ceremonial caches. Perhaps never 'chunked'(chunky stones)
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