Deleted
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Post by Deleted on May 26, 2014 21:24:58 GMT -5
I am zero'ing in on completion of my core drill press. I am not the best engineer and kinda sort things out as I go; so everything isn't perfect. But it will do the job. It has turned out to be very very solid and rotationally torque resistant. More images to come. These are a few of me getting the build accomplished. Here it sorta looks like it will be a throne lol first fit of the drill motor. Frame finalized - just need a table, finalize assembly of the drill add water source and to make the jigs for holding the various steps of the process. I am hoping for first cut tomorrow. Starting the new job on Wednesday so I want the major works done. It will cut stones up to 13" tall. The largest stone I own I am not even sure I can lift is an 11" tall agate from @azrockgeek. 13" should be plenty! Plus I am coring only up to 5" for now. Where do you put a sphere that is larger than 5"? More to follow........................... enjoy. Criticisms welcomed.
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unclesoska
freely admits to licking rocks
All those jade boulders tossed in search of gold!
Member since February 2011
Posts: 934
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Post by unclesoska on May 27, 2014 21:27:29 GMT -5
That looks like an AWESOME addition to your shop. I almost popped a retina when I saw the core bit! Looks like a real animal. It's unlike any I've seen. Could you tell a bit about it. Is it Diamond? Supplier? Cost? Your personal review would be great!
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Post by Pat on May 28, 2014 0:14:03 GMT -5
Scott, I hope you post pictures of the work it does. I mean I would like to see the 5" cores preparatory to it becoming a sphere. Wow!
I think cores are interesting in themselves, and have a small collection of nondescript cores. All are about one inch. My set of core drills tops out at 2". For jewelry purposes.
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Post by cobbledstones on May 28, 2014 9:52:17 GMT -5
Fantastic build! Can you give some details/link about the motor/drill? It looks promising for a project that has been kicking around the back of the skull.
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Post by DirtCleaner on May 28, 2014 12:32:38 GMT -5
More to follow........................... enjoy. Criticisms welcomed. There is a bit of brown grass!
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jamesp
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Post by jamesp on May 28, 2014 15:05:19 GMT -5
We could convert it to a guillotine and test it when I show up at your front door. Love the rack and pinion steering. We could turn it into a vertical torture rack. That motor looks like it has a ton of grunt(southern for torque). Will you use a bungee cord/sprring to let it self drop ? Wood is perfect for building stuff like that.
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Deleted
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Post by Deleted on May 28, 2014 16:22:53 GMT -5
We could convert it to a guillotine and test it when I show up at your front door. Love the rack and pinion steering. We could turn it into a vertical torture rack. That motor looks like it has a ton of grunt(southern for torque). Will you use a bungee cord/spring to let it self drop ? Wood is perfect for building stuff like that. Haven't made first cut yet so I have no clue about feed. I spent yesterday in bed sick. Barely made it to my baseball game. Yeah, the sprinklers are not working as they should. But I leave it because the tortoises want variety in habitat. Dry areas for when it is wet out... ....
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Deleted
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Post by Deleted on May 28, 2014 16:25:24 GMT -5
Scott, I hope you post pictures of the work it does. I mean I would like to see the 5" cores preparatory to it becoming a sphere. Wow! I think cores are interesting in themselves, and have a small collection of nondescript cores. All are about one inch. My set of core drills tops out at 2". For jewelry purposes. I will. I plan to make a little tute about using core drill for making preforms for spheremaking. I also want to make some 4" cores and slab them into drink coasters. Need to find cool sandstone here in SoCal for the coasters.
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Deleted
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Post by Deleted on May 28, 2014 16:26:15 GMT -5
Pat you need a hunk of OB with a 4" core cut in it for a drink holder to keep the cat from spilling your beverages.
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jamesp
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Post by jamesp on May 29, 2014 16:10:39 GMT -5
Is it about ready. I am liking your rig. The industrial junkyard often has magnetic drills w/those high torque motors. Heavy suckers. Probably short on travel.
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Post by rockpickerforever on May 29, 2014 16:37:54 GMT -5
You could always bring the mountain to Mohammed... If there's not enough travel going down to and into the rock, some smart engineering-type person could figure a way to bring the rock to the drill. A platform down below the drill, with a cradle/vise to hold the rock firmly, and a jack to lift it maybe? Just thinking out loud. (I'm not a smart engineering-type person, lol!)
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jamesp
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Post by jamesp on May 29, 2014 16:45:39 GMT -5
I think a lot of your engineering abilities Jean. You are sharp cookie. that drill may have close to enough travel. But you are right about coming up w/a way. Scott's rig sure has enough travel. The bit would have to be long to utilize all that travel ! But the rock may sit at all heights, he should be flexible.
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Deleted
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Post by Deleted on May 30, 2014 9:43:27 GMT -5
Here is the setup with a stone and a 3" core bit for perspective. Jim was spot on, like we expected otherwise!! NOT!! lol [/url] To make a three inch core you must have at least 5" of travel. Most drill presses only have 4" of travel.
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Post by 1dave on May 31, 2014 9:48:55 GMT -5
Core drilling machines are readily available for around $1,000. Many sizes of bits are available In 1989 I spent months using one like this to drill 2" and 4" holes through all the floors of the tallest "plywood structure" (the windows kept popping and falling out) in New England, the Hancock Tower in Boston. It should work fine for your project. You will need a good vise, that starting torque can toss you or your rock across the room.
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Deleted
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Post by Deleted on May 31, 2014 14:06:44 GMT -5
You can make up the travel on a regular drill press by raising the base after drilling a couple of inches. Jim
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Deleted
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Post by Deleted on Jun 1, 2014 17:00:49 GMT -5
I hope 1dave likes my vice system. 4x4 chunks screwed into the sacrificial table. The only force is rotational as the core bit is holding the stone down. Ready to cut Cut complete Where'd it go?? There it is! Mariposite
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Thunder69
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Post by Thunder69 on Jun 1, 2014 17:10:47 GMT -5
Thats awesome...John
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Post by Pat on Jun 1, 2014 17:28:41 GMT -5
That's a terrific machine you have invented! Congratulations!
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Deleted
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Post by Deleted on Jun 1, 2014 17:34:37 GMT -5
Thanks guys. It's not often my visions work well. I grokked this one and just had to find the time to finish it and start cutting.
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blackout5783
starting to spend too much on rocks
Member since November 2011
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Post by blackout5783 on Jun 1, 2014 19:07:26 GMT -5
Thanks guys. It's not often my visions work well. I grokked this one and just had to find the time to finish it and start cutting. Grokked? Is that kind of like kludged?
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