jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 4, 2015 17:42:31 GMT -5
Had been waiting for special oil for the worm screw gearbox. Should grind hard with tall rock column and wedged edges. Support leg welded to self dump into tray Source of grit, 60 grit silicon carbide grinding wheels Ready to start
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Post by captbob on Jan 4, 2015 18:47:59 GMT -5
Very cool, looks like something out of War Of The Worlds.
Now, about that red 5 gal bucket...
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 4, 2015 19:01:21 GMT -5
Very cool, looks like something out of War Of The Worlds. Now, about that red 5 gal bucket... It used for muck and swamp slime, maybe a few body parts from the Tech/Ga game
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Post by pghram on Jan 4, 2015 19:03:11 GMT -5
Nice build.
Rich
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Post by Pat on Jan 4, 2015 19:41:23 GMT -5
Neat!
What are you tumbling?
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 4, 2015 21:47:07 GMT -5
Neat! What are you tumbling? Mostly corals Pat. Testing to see what it does. grind rate mostly. It has a small motor, may be cheaper
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Post by captbob on Jan 5, 2015 0:16:27 GMT -5
Very cool, looks like something out of War Of The Worlds. Now, about that red 5 gal bucket... It used for muck and swamp slime, maybe a few body parts from the Tech/Ga game All is forgiven. First college game I ever went to was at Ga Tech - would have been 1969 or 70 w/ Granddaddy.
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,341
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Post by quartz on Jan 5, 2015 1:10:12 GMT -5
Good looking machine, like that catch leg for tipping it.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 5, 2015 4:31:31 GMT -5
Good looking machine, like that catch leg for tipping it. It was going to bruise the rocks if it was unloaded standing up. those bowls are made in increments of 2 inches up to 24 inches in diameter. 12, 10,9 and 8 gauge thicknesses. after 30, they are in 6 inch increments in diameter, and start getting a lot thicker. they come in hemisphere and elliptical. That on is 20 inch elliptical with tall wall. The wall height varies too. materials can be several grades of steel and stainless. It was a real cheap build using recycle. would prefer a low friction spur gear reduction instead of a worm gear reduction box. I suppose a 36 inch bowl would hold 200 pounds. Maybe a 3/4-1 HP motor. To tip it a vertical pole could be welded to the top to assist leverage so one man could tilt it over. May be a good design for a production facility for Mom and Pop operation. I loaded it with the same coral I have tumbled a dozen times before in 6 and 8 inch barrels, i know it's grind rate well. should be able to make accurate comparison of grind rate. the rough shaped rocks build up and fall a bit at 80% fill. as they round a bit that may slow down. Will add the smalls in a few days, that should smooth it down too. Other than that, it seems like smooth sailing. It is outside under roof but exposed to freeze. I suppose salt could be added for anti freeze. Corrosive though. maybe a thermostatically controlled lamp focused on the bowl would keep it warm.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 5, 2015 4:35:42 GMT -5
It used for muck and swamp slime, maybe a few body parts from the Tech/Ga game All is forgiven. First college game I ever went to was at Ga Tech - would have been 1969 or 70 w/ Granddaddy. Yellow and black buckets for finished product and fresh water.
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Post by snowmom on Jan 5, 2015 5:35:32 GMT -5
your creativity never ceases to amaze me!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 5, 2015 5:41:09 GMT -5
your creativity never ceases to amaze me! While I am slaving in the shop building someone is walking the shores collecting. You got the right idea Deb.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 5, 2015 6:04:21 GMT -5
Note on grinding wheel chunks- broken to 1+ inch chunks they last 2-4 weeks maybe longer, smaller 1-2 weeks in 6 inch rotary.
Slurry has to be drained off the top and fresh water added to maintain good consistency. Not doing total clean out, just keeping slurry from getting too thick.
Grinding 2nd run of rocks using grinding wheel chunks in the 6 inch barrel. Seem to work fine.
will keep an eye on chunks in this machine, guessing they will break down faster with added weight column.
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Post by snowmom on Jan 5, 2015 6:22:50 GMT -5
your creativity never ceases to amaze me! While I am slaving in the shop building someone is walking the shores collecting. You got the right idea Deb. Last walk was Dec 28 (amazing!) I'll be out of commission for quite a while now, winter is finally here. Good thing Santa brought me a moto tool with a nice flex attachment. I'll be busy making windows in some of those mystery rocks til the ice melts. Your way is a lot more expedient, but at least i'll stay out of trouble.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 5, 2015 7:18:35 GMT -5
While I am slaving in the shop building someone is walking the shores collecting. You got the right idea Deb. Last walk was Dec 28 (amazing!) I'll be out of commission for quite a while now, winter is finally here. Good thing Santa brought me a moto tool with a nice flex attachment. I'll be busy making windows in some of those mystery rocks til the ice melts. Your way is a lot more expedient, but at least i'll stay out of trouble. So winter finally got there. You got stock to work, sounds like all is well. Maybe the winter storms will turn over new rocks.
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Post by snowmom on Jan 5, 2015 8:24:53 GMT -5
Last walk I found stuff that had been exposed in the Thanksgiving storm ( 11 inches overnight which subsequently melted) ... a couple giant puddingstones... only hoping the rest of the winter doesn't cover them up again before I can yank them out of there in the spring!
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Post by connrock on Jan 5, 2015 10:18:44 GMT -5
Looks good James! It sounds like the rocks are banging quite a bit and I'll be interested in hearing it when you add the smalls. connrock
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 5, 2015 10:25:15 GMT -5
Last walk I found stuff that had been exposed in the Thanksgiving storm ( 11 inches overnight which subsequently melted) ... a couple giant puddingstones... only hoping the rest of the winter doesn't cover them up again before I can yank them out of there in the spring! I would think that wind an waves would reap havoc, especially if ice is in the water. Do those lakes fluctuate, I would think the ice melt would raise the level ?
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,182
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Post by jamesp on Jan 5, 2015 10:37:23 GMT -5
Looks good James! It sounds like the rocks are banging quite a bit and I'll be interested in hearing it when you add the smalls. connrock I tried it half full for a few seconds, it was way too rough. At 80% it is way calmer. The metal is loud and the camera sensitive. Oddly, it is quieter than the PVC barrels. And it is loud without water. Mostly full of 2-2.5 inch coral with limestone coating which wears off fast.
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39don
starting to spend too much on rocks
https://www.etsy.com/shop/DonsLapidaryArts
Member since February 2012
Posts: 225
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Post by 39don on Jan 5, 2015 11:26:49 GMT -5
Loving your thought process James, very nicely done. 39don
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