Mark K
Cave Dweller
Member since April 2012
Posts: 2,575
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Post by Mark K on Apr 23, 2018 15:36:11 GMT -5
I wonder if this would not be a good time to experiment with straight to polish? If it fails, you just try something courser.
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Post by rockpickerforever on Apr 23, 2018 16:16:51 GMT -5
I wonder if this would not be a good time to experiment with straight to polish? If it fails, you just try something courser. My thoughts exactly. I think they would be a candidate for finer tumbling, starting at maybe 400? Then finer, then polish. I would use a vibe so they don't get modified too much, mostly retain their natural shape. I have a few agates I've thought of trying that on.
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Post by gmitch067 on Apr 23, 2018 17:06:34 GMT -5
I wonder if this would not be a good time to experiment with straight to polish? If it fails, you just try something courser. I have to take a close look at the shells when they arrive. If they are already smooth, I see no problem with going straight to AO-14000 polish as a test. If the polish is too spotty after 18-24 hours, I can always go back and run the AO-500... then to AO-1000 before retrying the polish.
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Apr 23, 2018 18:15:32 GMT -5
I have had the individual shells fall out of rough in the tumbler. They hold up well and don't grind any faster than the host.
IF it were me (been eyeing them) I would probably go vibe, 220 and up. Of course you're trying to maintain edges so maybe 500 and up is the way to go.
Just looked at Rockshed's pic of the shells. Some broken, some with matrix(?) attached, might have to cherry pick.
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Post by gmitch067 on Apr 23, 2018 20:29:24 GMT -5
I have had the individual shells fall out of rough in the tumbler. They hold up well and don't grind any faster than the host. IF it were me (been eyeing them) I would probably go vibe, 220 and up. Of course you're trying to maintain edges so maybe 500 and up is the way to go. Just looked at Rockshed's pic of the shells. Some broken, some with matrix(?) attached, might have to cherry pick. Thank you for the advice tkvancil. Cherry-pick... That is why I bought 5 lbs worth. Lol! I also wanted to see if any were intact enough to turn into a necklace pendant or two... or three... I thought of turning some of my 40x30mm Aventurine oval cabs into backings... sort of carve out the Turritells shape through half the cab's thickness and imbed/mount the shell. (OH Nooooo!!! kk's carvings have finally caused me to go off the deep end!!! Elephant tusks!!!! Hmmm....) Glenn
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Post by kk on Apr 23, 2018 21:28:20 GMT -5
I thought of turning some of my 40x30mm Aventurine oval cabs into backings... sort of carve out the Turritells shape through half the cab's thickness and imbed/mount the shell. (OH Nooooo!!! kk's carvings have finally caused me to go off the deep end!!! Elephant tusks!!!! Hmmm....) Glenn Go for it! If it does not work, you still got the option to reenforce the shell imprint on the cab for a unique cab. Can't be worse than using dino to attempt to resemble an 8mm scorpion..... (and by the way, the moonstone tusks are holding up well. Was wearing the elephant 24/7 on several occasions without problems. )
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 24, 2018 3:56:31 GMT -5
You can't go wrong trying delicate material in a small barrel and filling it to 80% for a gentle tumble. It may take longer but gentle will still grind. I still get decent grind rates on a slow rolling small diameter barrels with 80 to 85% filled with fairly thick slurry. A set up like that hardly imparts any mechanical shock on the rocks but they are still rubbing against each other 24/7.
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Post by grumpybill on Apr 24, 2018 6:53:48 GMT -5
The problem I see is being able to get any rubbing/grinding action in the grooves. Would need to add a lot of very small round stones or ceramic beads to reach in there...which (from my limited experience) would really slow things down in the course stage.
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Post by gmitch067 on Apr 24, 2018 8:22:48 GMT -5
You can't go wrong trying delicate material in a small barrel and filling it to 80% for a gentle tumble. It may take longer but gentle will still grind. I still get decent grind rates on a slow rolling small diameter barrels with 80 to 85% filled with fairly thick slurry. A set up like that hardly imparts any mechanical shock on the rocks but they are still rubbing against each other 24/7. Thank you jamesp I gather you are talking about a 3A (~55 RPM) filled 80%+, using small media for cushioning, and thick slurry (promoted with either Borax or Metamucile)? Is this a situation that using a rotary over a vibe is preferable? Also... Thank you grumpybill I still have ~3 lbs of 2mm ceramics from last year experimenting ( ) that I could use in a 3A for cushioning. I would not look forward to that... but... I would not use the 2mm ceramics in a vibe though. I also have ~3 lbs of very small polished quartz pea-gravel. Glenn
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 24, 2018 9:10:12 GMT -5
I like clay in a rotary. A 3A is perfect. Even at 55 RPM because of small diameter. Gentle enough. The more I tumble the more I like 80-85% barrel fill for anything remotely delicate. Great way to snuff out banging in the barrel. The vibe can work but you won't get the shaping that a rotary has to offer. Your preference there.
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ontherocks
noticing nice landscape pebbles
Member since May 2017
Posts: 76
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Post by ontherocks on Apr 24, 2018 11:13:06 GMT -5
I just bought some of these and am tumbling them right now. I put them straight into my Lot-0 with 220, except for a couple that has some buildup on them which I put in my rotary.
They are bigger than I though, 1/2 - 1 inch and they are really cool. Much bigger and more colorful than the pictures of the single shell above. I am already planning on buying more.
I will try to wash them out of the 220 tonight or tomorrow and I will try to post pictures of you want.
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Post by gmitch067 on Apr 24, 2018 15:03:28 GMT -5
I just bought some of these and am tumbling them right now. I put them straight into my Lot-0 with 220, except for a couple that has some buildup on them which I put in my rotary. They are bigger than I though, 1/2 - 1 inch and they are really cool. Much bigger and more colorful than the pictures of the single shell above. I am already planning on buying more. I will try to wash them out of the 220 tonight or tomorrow and I will try to post pictures of you want. That would be very helpful ontherocks . Thank you! Mine are still in shipment. I thought they would be small, but I would be pleased to find some larger... more jewelry making possibilities. Glenn
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herchenx
Cave Dweller
Member since January 2012
Posts: 3,360
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Post by herchenx on Apr 24, 2018 15:12:50 GMT -5
I, too, loved his trip reports. Great pics and reports, always felt like you were tagging along! I did vfind his thread where he had posted pics of the completed tumbles from that trip, including the goniobasis. Unfortunately, all the links were broken. Not pbucket, but google. Instead of a ransom notice, all his pics in that thread have been replaced with an exclamation point in a white triangle. Dang, but I wish I could see those pics! Jean, if you can find the page link I am going to try to re-upload all the images to my own hosted site. I'd been doing this before and it is the most reliable, longest-term way for me to share photos. I bet I can find them all and get that thread back into commission!
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Post by rockpickerforever on Apr 24, 2018 15:17:38 GMT -5
I, too, loved his trip reports. Great pics and reports, always felt like you were tagging along! I did vfind his thread where he had posted pics of the completed tumbles from that trip, including the goniobasis. Unfortunately, all the links were broken. Not pbucket, but google. Instead of a ransom notice, all his pics in that thread have been replaced with an exclamation point in a white triangle. Dang, but I wish I could see those pics! Jean, if you can find the page link I am going to try to re-upload all the images to my own hosted site. I'd been doing this before and it is the most reliable, longest-term way for me to share photos. I bet I can find them all and get that thread back into commission! John, I am looking for it as I type! The photo was of a/some goniobasis that you tumbled. The photo had been on Google, the image was IMG_20130705_203015.jpg. Probably not helpful. I am still looking for the thread I pulled that off of.
Will get right back to you on it.
BTW, we miss you and your wonderful Field Trip reports!
Jean
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herchenx
Cave Dweller
Member since January 2012
Posts: 3,360
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Post by herchenx on Apr 24, 2018 15:36:46 GMT -5
Let's see if this works:
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Post by rockpickerforever on Apr 24, 2018 17:32:51 GMT -5
John herchenx, I haven't found that thread yet. I can't believe I found it thread once, but can't find it again. I guess my brain just doesn't phrase searches the same from one time to the next. Out of time for today, will pick up the search again tomorrow. In the last few months, I have uploaded pics and fixed a few of my old threads. With all the trip reports, family trips and other photos you have posted over the years, I gotta say, you got your work cut out for you! Good to hear from you again. Jean
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herchenx
Cave Dweller
Member since January 2012
Posts: 3,360
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Post by herchenx on Apr 24, 2018 17:35:00 GMT -5
rockpickerforever haha yep it will take some doing! It's nice to be around, even for a bit!
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Post by aDave on Apr 24, 2018 22:41:48 GMT -5
John herchenx , I haven't found that thread yet. I can't believe I found it thread once, but can't find it again. I guess my brain just doesn't phrase searches the same from one time to the next. Out of time for today, will pick up the search again tomorrow. In the last few months, I have uploaded pics and fixed a few of my old threads. With all the trip reports, family trips and other photos you have posted over the years, I gotta say, you got your work cut out for you! Good to hear from you again. Jean Jean, is this the thread you were looking for? forum.rocktumblinghobby.com/thread/61112/shiny-wyoming-flint-agate-mixedETA: rockpickerforever , I'm now thinking it's not. The (missing) photo of the shells in the thread I found has a different file name than the one you listed above. ETA (Again): Here it is: forum.rocktumblinghobby.com/thread/60824/7-5-13-tumble . In that thread, one of the missing photos has the file name of the one that you posted about.
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Post by rockpickerforever on Apr 25, 2018 0:07:23 GMT -5
Hey, aDave , nope not that one. The file name of the photo taken from the thread I am looking for is IMG_20130705_203015.jpg. Couldn't view that image, but said it was tumbled goniobasis from that trip. Didn't realize it until just now, but that is the photo that John posted just above. The image labelled "A little Turritella for good measure" (also not showing) in the thread you linked to is IMG_20130725_002611.jpg. Close! Almost certainly material collected on the same trip. His report on the trip when he collected the shells was dated 8/18/12. The follow up photos of tumbled material from that trip was several months after that, either late 2012 or early 2013. Not as late as July 2013. It's here somewhere, I will find it! Thanks for looking though, Dave. ETA - That may very well be the thread, Dave. For sure it is the same photo. But I could have sworn he had posted it sooner after his trip. Maybe he did post it previous to this latest thread you posted a link to? Either way, he's got a lot of pics to re-upload, and links to fix!
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Post by aDave on Apr 25, 2018 0:10:58 GMT -5
Hey, aDave , nope not that one. The file name of the photo taken from the thread I am looking for is IMG_20130705_203015.jpg. Couldn't view that image, but said it was tumbled goniobasis from that trip. Didn't realize it until just now, but that is the photo that John posted just above. The image labelled "A little Turritella for good measure" (also not showing) in the thread you linked to is IMG_20130725_002611.jpg. Close! Almost certainly material collected on the same trip. His report on the trip when he collected the shells was dated 8/18/12. The follow up photos of tumbled material from that trip was several months after that, either late 2012 or early 2013. Not as late as July 2013. It's here somewhere, I will find it! Thanks for looking though, Dave. Jean rockpickerforever . It's here: forum.rocktumblinghobby.com/thread/60824/7-5-13-tumble. I added the correct thread in a second edit above. In this thread I listed, the photo in question is titled, "Some Turritella (goniobasis snail) from my trip to Wamsutter Wyoming last summer ." The full image address (now broken) is lh6.googleusercontent.com/-JJ13pwkvajc/UdeBbDeG2sI/AAAAAAAAVm0/D4Usqu0DtIw/w1153-h865-no/IMG_20130705_203015.jpg. I guess John could have posted the picture in multiple threads, but this particular thread has the file name in it you're looking for. To the OP gmitch067 , sorry for the brief derailment, but I was working on trying to get you some finished photos of product by helping rockpickerforever and herchenx locate that thread. However, it looks as if the photo was already posted above, and I missed it. ETA: Jean, I just saw you found my second edit above. I missed that as well. I'll back out for now so things can get back to normal.
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