Just wondering if anyone has tried using sand as a pre-tumble before the first stage of 60/90 grit? If not that rushed to really start my first stage, I'll pre-tumble using sand, or the dust left over from smashing rocks. It seems to work fairly well. Instead of recharging everytime with new 60/90 grit.
No reason it wouldn't work, but it would oly cut soft materials. It needs to be coarse builder's sand. Windblown sand like what you find in deserty areas is rounded to the point it won't cut. it isn't useful for concrete production, eityher and that's why the Saudis have to import building sand. It would be useful, I guess, for cleaning off adherent mud and grainy material and removing crusts of soft minerals like calcite. Add vinegar and you have some real potential there. What kuind of stuff do you tumble and what effect does the sand seem to have? How long do you run that stage?
that's great, I was just thinking that very thing last night! I have a bunch of silica sand, I was thinking about using it in the tumbler prior to the 60/90, or maybe even in the vibe, I was thinking the sand in the vibe would be a great way to get good coverage and have a cushioning effect....however I'm concerned about the sand possibly scratching the material in the 500 and above stages...I'm going to test it on a batch of pet wood I'm not too concerned about...
I know my Grandfather used to use a hard gravel in his tumbler before the 60/90 stage...I still have a small amount of it...I'm not sure what kind of material it is...it's rough, angular, kind of black/grey...
Docharber, The effect is not that great, but it does seem to knock off the sharp edges. I polish anything found mostly agate, and pet wood, or anything else that may look nice polished. Bought some Amethyst, smokey quartz and tiger eye, which are tumbling with sand now. I'll get some pictures to show examples of rough, before and after tumbling in sand for about 45 hours. Normally about 100 hours at 78 rpm in sand. It isn't that often I do a pre-grind with sand, but it seems to help. Mikes, Use the sand only in a pre-grind stage before you start the first 60/90 stage. Never use the sand anywhere else execpt as a pre-grind. The sand is used as a replacement of the 60/90 grit. Re-charge as you go with new sand, if you are happy then you can start the first tumble with 60/90. Plus the sand or rock dust is free. Re-charging everytime with first grind 60/90 grit can get costly. This is just my idea, been doing this for a while and certainly won't hurt your hardest stones.
Post by ASI Industries on Apr 5, 2009 14:33:08 GMT -5
I know my Grandfather used to use a hard gravel in his tumbler before the 60/90 stage...I still have a small amount of it...I'm not sure what kind of material it is...it's rough, angular, kind of black/grey.
I got a 5 ton billet of Quartz-Dolerite in my rear garden just 6 inches below the surface, plus it is everwhere within 15 mile radius. -- I hail from (The Barony of Seabegs) Bonnybridge, Stirlingshire U.K, where aliens sometimes come for a visit!
If it's even muddy sandy stuff will work. You can basically place rough stones in a barrel with just water and the stones will create their own grit and round off some. It happens in nature, why wouldn't it happen in our tumblers? Grab a handful of any type sand and give it a try..see what happens.
Useing sand and water or nothing execpt water with your rough stones will do some degree of rounding. It doesn't matter what you are using as grit, just add a handfull, about 6-8 table spoons, add water to just cover the top of your stones and let it shake, rattle and roll. See what happens after 2-5 days. Most certainly the sand does help, but not as great as the 60/90. Could save some money if your are not in a real hurry to get your stones done. Or a low budget guy, like me, trying something different.
I have tumbled using sand as a "pre-grit" media more than a few times but I use it to clean rocks I collect or rocks that have been sitting outside for a while and have gathered organic mung. I will tumble them for a few hours with 4-5Tbsp of sifted beach sand or bulk quartz sand (available at craft stores or cheaper if you can find it as white sand ashtray filler). It definately starts to take the sharp edges off if you leave it going for a while but it would round off and break down quickly with most stones.
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Just wondering if anyone has tried using sand as a pre-tumble before the first stage of 60/90 grit?
A few old timers used to use sand in place of 60/90 because it was cheap. it takes longer. What makes Silicon carbide a better cutter is that it tends to break into smaller bits but fractures with new sharp/fresh cutting edges as it breaks down.
tumbleon: lol good deal thanks for liking my emerald, tomorrow im gonna take some time to take pics of the rest of my first tumble...im picky hah I got some great garnets out of the batch but a lot of other stuff got destroyed im a beginner and didn't understand moh
Mar 3, 2014 22:28:00 GMT -5
mr.mohs: garnets? in matrix? same story!!!
Mar 3, 2014 22:30:40 GMT -5
tumbleon: no the garnets where like in crusted balls the size of coca puffs cereal, I found them gold panning.....they ended up nice...with a flashlight going through them about 1 karat each blood red (with light)
Mar 3, 2014 22:37:43 GMT -5
tumbleon: i have them in a vial
Mar 3, 2014 22:39:03 GMT -5
rockpickerforever: mr.mohs, your entrance, who you were with and what you were wearing were all stunning! Loved your acceptance speech! But you are not responsible for stopping the shouts. Been dealing with some of life's crap the last couple weeks, I need some rock therapy!
Mar 4, 2014 10:24:48 GMT -5
rockpickerforever: Or maybe some other kind of therapy...
Mar 4, 2014 11:28:51 GMT -5
mr.mohs: best I can say is deep breaths. they've gotten me this far hope it gets rolling smooth again soon!! edmohs
Mar 4, 2014 12:41:39 GMT -5
rockpickerforever: Thanks for the suggestion and well wishes, Ed. With the family all coming together, we'll make it through. Aging parents is something everyone has to face at some point. I know a lot of the RTH members already have or are dealing with it now.
Mar 4, 2014 15:11:11 GMT -5
drocknut: Jean hope you get in some rock therapy, the other kind is a bit expensive from what I've been told. Hang in there.
Mar 4, 2014 19:19:17 GMT -5
tumbleon: hi guys, best of wishes and prayers to everyone... just saying hello and goodnight
Mar 4, 2014 20:39:40 GMT -5
rockpickerforever: Thanks, Diane and tumbleon. Was just kidding about the other therapy, Diane, I'm doing okay. Trips to the hospital to see mom filling my days, not much time to play on the flat lap. But it's set up, so if I can get a minute...
Mar 4, 2014 21:05:02 GMT -5
mr.mohs: concerning therapy...I went to a shrink to get my head examined...no help...the doc ran into a rock
Mar 5, 2014 0:41:52 GMT -5
rockpickerforever: mr.mohs, I think we all have rocks in our heads, lol. Thanks, Paul, and mine with yours.
Mar 5, 2014 10:02:53 GMT -5
wireholic: Does anyone know if there are gems/stones or even just colors associated with the 12 step programs? My jewelry is being displayed in a shop that specializes in "recovery gifts" and I'd like to tailor the jewelry to the theme.
Mar 5, 2014 11:41:40 GMT -5
mr.mohs: recovery stones are probably a subjective thing- but the 'Book of Stones' would be a good resource...
Mar 5, 2014 12:39:23 GMT -5
wireholic: Good idea! Not sure if I have that book but I think I have a book on healing crystals somewhere
Mar 5, 2014 13:28:57 GMT -5
The Dad_Ohs: If you don't find your book, you can look up most any stone online and get a metaphysical answer about the stone, what chakras it opens if it works better with other stones or alone, what parts of the body/mind it affects, all that long hair stuff !!! LOL
Mar 5, 2014 19:50:14 GMT -5