jamesp
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Post by jamesp on Dec 7, 2017 2:16:55 GMT -5
They did me a favor and broke a pallet quantity and sold me 14 - 50 pound bags. Lifetime supply. A distributor of well drilling pipe and foundry supplies. Big operation. stock yard of water and oil drilling pipe in just one direction Partial pallet of bulk SiC via forklift and into back of P/U. Will remove from paper bags and dump in capped 55 gallon plastic drum. Paid $467 for 700 pounds. Partial pallet charge of $95 included in the $467. Final cost 67 cents per pound. Same cost as 200 pounds of screened SiC from the other guys. Buy and pick up a one ton bulk bag reduces cost to 47 cents per pound. I will sell a few MFRB's whatever that weighs for $1/pound, you catch shipping. No LFRB's.(wife is transporter to post office). And I don't want to deal with boxes blowing out. WARNING: May cause pre-mature wear of tumbler barrels.
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Post by captbob on Dec 7, 2017 8:22:10 GMT -5
I can't keep up - what grit(s) is this bulk stuff you got?
Heck of a deal you found. Wonder how many of us have someone in our area that sells such and we don't even know where to look.
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jamesp
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Post by jamesp on Dec 7, 2017 9:40:37 GMT -5
I can't keep up - what grit(s) is this bulk stuff you got? Heck of a deal you found. Wonder how many of us have someone in our area that sells such and we don't even know where to look. According to the manufacturer W. Mills there is only 2 distributers. One in Bama and one in Washington state. Lampus in Pennsylvania apparently sells it. The only users are foundries and they use it by the ton/rail car. PM me your address and I'll send you MFRB This batch has more bigger 3/8" particles than the 50 pounds I got from notjustone. I prefer the bigger. Perfect time release when rolling a hammer stone or tumbling 1 to 2.5 inch rocks in rotary even w/thick slurry.
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Post by captbob on Dec 7, 2017 9:54:50 GMT -5
I appreciate the offer, but don't think I could use it in my barrels. I couldn't get 30 grit to breakdown in them, so I'm thinking that this chunky stuff probably wouldn't either. The Thumler's Model B barrels have a thick rubber liner in them which may reduce or slow grit breakdown. They work well for my lackadaisical tumbling method. Had to give up on 30 grit. 46/70 is my go to coarse grit now.
This stuff you picked up probably works great in hard sided barrels like your PVC creations. Coarse grits smashed between rocks & PVC making for proper/faster breakdown of grit and speedy rock shaping. Do you think this would work in lined barrels?
Is your stuff a numbered (graded) grit?
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Post by captbob on Dec 7, 2017 11:02:43 GMT -5
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jamesp
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Post by jamesp on Dec 7, 2017 11:15:36 GMT -5
I don't think it has a grit designation. It is probably a foundry size designation. It says "sizing: "3/8" X 65M". No idea what that means. Heaviest little 50 pound bags you want to pick up. It sure split nice. Exactly a 1/2 bag fills a MFRB perfectly. DIRTY DUSTY X10 I am putting it in 16 gallon open top steel drums that 2 guys could set on a trailer/truck if need be. It's all glittery and purdy. Goes good with grits at breakfast. cleans intestines, rough on duodenum 700 pounds in truck. 4000 pounds steel parts on trailer. Up for an unload ?
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Post by captbob on Dec 7, 2017 11:19:10 GMT -5
^ photo reminded me of something else I've been meaning to ask you.
How does one secure a 55 gal barrel to a pallet for shipping? Seems it would be kinda top heavy. Figured you would know.
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jamesp
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Post by jamesp on Dec 7, 2017 14:38:36 GMT -5
^ photo reminded me of something else I've been meaning to ask you. How does one secure a 55 gal barrel to a pallet for shipping? Seems it would be kinda top heavy. Figured you would know. I see them all the time at the freight dock w/out a pallet. They use a drum clamp attachment on forklift. What is your thoughts about 6 sided barrels not breaking down SiC 30. Others that complain about SiC 30 not breaking were using 6 siders. 6 siders known for being much more gentle. I have used both Lortone rubber and PVC with SiC 8 and Sic 16 and never had trouble with break down. Lortone is 12 sided, essentially round. Round barrels quite a bit more aggressive.
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jamesp
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Post by jamesp on Dec 7, 2017 14:40:40 GMT -5
I must have 1000 pounds better than those. Too high a price IMO.
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Wooferhound
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Post by Wooferhound on Dec 7, 2017 19:22:12 GMT -5
Hmmm . . . looks like 8 and 2 Grit ...
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notjustone
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Post by notjustone on Dec 7, 2017 23:58:08 GMT -5
This batch has more bigger 3/8" particles than the 50 pounds I got from notjustone . I prefer the bigger. Perfect time release when rolling a hammer stone or tumbling 1 to 2.5 inch rocks in rotary even w/thick slurry. is there any fines in it or at least a considerable amount? would not surprise me at all if they screened out the different sizes and sold as abrasive.(think sic belts and wheels.) and sold the big stuff as metallurgical. size doesn't matter to much if your throwing it in a furnace. I was going to screen mine out but read a post somewhere that the guy weighed stones after each grit and the smaller grits actually removed more weight. so just load it as is. word of warning it will wear out the cheasy lid on an ar-12 barrel in just a couple loads lol.
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quartz
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Post by quartz on Dec 8, 2017 1:20:11 GMT -5
That is some serious grit. An old friend who had been tumbling for many years was in a little disbelief when we told him about using 16 grit. He tried it, and liked it too. Your stuff would really be an eye opener to him.
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jamesp
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Post by jamesp on Dec 8, 2017 4:33:42 GMT -5
This batch has more bigger 3/8" particles than the 50 pounds I got from notjustone . I prefer the bigger. Perfect time release when rolling a hammer stone or tumbling 1 to 2.5 inch rocks in rotary even w/thick slurry. is there any fines in it or at least a considerable amount? would not surprise me at all if they screened out the different sizes and sold as abrasive.(think sic belts and wheels.) and sold the big stuff as metallurgical. size doesn't matter to much if your throwing it in a furnace. I was going to screen mine out but read a post somewhere that the guy weighed stones after each grit and the smaller grits actually removed more weight. so just load it as is. word of warning it will wear out the cheasy lid on an ar-12 barrel in just a couple loads lol. The photo is deceptive. Apparently the fines settled to the bottom of the bags. When transferring to 16 gallon steel drums it was obvious that separation of size had occurred. It has the same composition of sizes as the box you sent. The 16 gallon drums held just short of four 50 pound bags and were easy to roll to the back of the barn for storage. Barrel wear seems proportional to rock wear. Broken ~1" chunks of fused SiC 60 grinding wheels and this stuff wears round white PVC barrels out in a jiffy. I used a grey sch 80 PVC end plate in the latest set of barrels. And grey PVC couplings. It is a much softer PVC. Grey PVC is another animal, it resists wear much better. The sch 80 end plate (opposite lid) has hardly worn and it is most susceptible to wear of all parts of the barrel. Bought a 4 foot stick of sch 80 PVC pipe for $55 on Ebay. Next barrels will be made of it. SDR 35 is a hard PVC pipe, wears fast sch 40 is medium hard, wears much slower sch 80 is softer, appears to wear slowest of the 3 I have made barrels of all three. well, recently a hybrid of sch 40 and 80 In most cases soft repels abrasive wear best. Tire rubber would be about as good as it gets for wear resistance because it is designed for similar abrasives as used in tumbling.
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jamesp
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Post by jamesp on Dec 8, 2017 5:30:48 GMT -5
That is some serious grit. An old friend who had been tumbling for many years was in a little disbelief when we told him about using 16 grit. He tried it, and liked it too. Your stuff would really be an eye opener to him. Does sch 80 seem to wear slower than white sch 40 Larry ?
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notjustone
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Post by notjustone on Dec 8, 2017 10:20:58 GMT -5
you need to try a barrel of sifted vs straight out the bag. weigh rocks going in and coming out. all other variables the same. and see if its worth even separating it.
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notjustone
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Post by notjustone on Dec 8, 2017 10:28:20 GMT -5
"The photo is deceptive. Apparently the fines settled to the bottom of the bags. When transferring to 16 gallon steel drums it was obvious that separation of size had occurred. It has the same composition of sizes as the box you sent."
yeah its weird in the 3000 lbs bags all around the outside is a high concentration of the large chunks. not really like settling though almost like when they fill the big chunks roll down the hill to the outside edges.
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jamesp
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Post by jamesp on Dec 8, 2017 11:14:25 GMT -5
you need to try a barrel of sifted vs straight out the bag. weigh rocks going in and coming out. all other variables the same. and see if its worth even separating it. The only difference that seems to happen is that the bigger chunks time release since it takes more time to crush them. I double the dose for the big chunks and let it roll twice as long. Like if I am busy with other stuff.
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quartz
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Post by quartz on Dec 8, 2017 23:39:27 GMT -5
I can't say sched. 80 wears +/- faster than 40, never made two barrels of the same size out of both. I do like the wear resistance of the gray electrical conduit PVC, and a better finish is generally obtained using it over the harder white mtl. The rock banging against the barrel walls seems to play a big part of finish too.
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jamesp
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Post by jamesp on Dec 9, 2017 1:41:35 GMT -5
I can't say sched. 80 wears +/- faster than 40, never made two barrels of the same size out of both. I do like the wear resistance of the gray electrical conduit PVC, and a better finish is generally obtained using it over the harder white mtl. The rock banging against the barrel walls seems to play a big part of finish too. Thanks Larry. I wish Michelin would make barrels out of tire rubber.
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Wooferhound
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Post by Wooferhound on Dec 9, 2017 8:09:21 GMT -5
A Michelin 4 ply, radial steel belted tumbler barrel rated for snow
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