dbcooper
off to a rocking start
Member since July 2018
Posts: 6
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Post by dbcooper on Jul 28, 2018 9:29:46 GMT -5
I have the “hearthsong tumbler for children” that I bought for my son a few years ago. I always keep the speeds of it on 3, it’s highest setting. But I have not been able to find anywhere on the internet at what speed is ideal or at what stages? It seems that most people use only one speed based off RPMs. The tumbler I have has 3 speed settings.
I came here because you all know what you’re talking about. This is my first post and I am positive I have a lot to learn on tumbling so I’m glad I found you all!
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Post by rockjunquie on Jul 28, 2018 9:49:49 GMT -5
I have the “hearthsong tumbler for children” that I bought for my son a few years ago. I always keep the speeds of it on 3, it’s highest setting. But I have not been able to find anywhere on the internet at what speed is ideal or at what stages? It seems that most people use only one speed based off RPMs. The tumbler I have has 3 speed settings. I came here because you all know what you’re talking about. This is my first post and I am positive I have a lot to learn on tumbling so I’m glad I found you all! Welcome! You've come to right place for help. I don't tumble, but one of our world class tumblers will surely help you.
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Wooferhound
Cave Dweller
Lortone QT66 and 3A
Member since December 2016
Posts: 1,428
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Post by Wooferhound on Jul 28, 2018 10:02:59 GMT -5
Fast speed equals fast results but rough tumbling leading to damage/bruising Best for hard stone and First time tumblers to see things happen more quickly
Slow speed equals slower results but more gentle on the contents Best for shells or softer Stones that are easy to bruise or damage
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Post by Pat on Jul 28, 2018 16:16:23 GMT -5
Not a tumbler, but there are tumbling EXPERTS here!
Welcome from California.
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,348
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Post by quartz on Jul 28, 2018 23:02:59 GMT -5
Welcome to the forum.
See if you can mark the barrel and get an idea of what each speed is [R.P.M.] with an analog watch second hand or stopwatch. Then come back here and you will likely get more realistic answers. The dimensional size of the barrel would be helpful too.
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tkvancil
fully equipped rock polisher
![*](//storage.proboards.com/forum/images/stars/star_green.png) ![*](//storage.proboards.com/forum/images/stars/star_green.png)
Member since September 2011
Posts: 1,546
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Post by tkvancil on Jul 29, 2018 8:52:46 GMT -5
Not familiar with that particular tumbler ... However general theory says the fastest speed would be for coarse grind and polishing done at a lower speed.
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Post by gmitch067 on Jul 29, 2018 10:04:31 GMT -5
Very good question dbcooper - one that is shared by others over a number of different small capacity rotary (and even vibratory - MiniSonic-4) tumblers. It looks like the Hearthsong and the National Geographic Pro tumblers are similar - both having a small 1.5 to 2 lb barrels with speed controls. Agates and Jaspers, which are relatively hard stones (Mohs 6.5-8) will probably be OK at the high speed setting... as long as the stone is not brittle - like Amethyst - The fast speed might cause bruising and chipping. You have to experiment on that one. I would choose the slow to mid speed settings to do my final polishing run. jamesp posted an interesting video he found showing how speed changes the internal grinding action within a tumbler... 'might help you understand the dynamics. forum.rocktumblinghobby.com/thread/81456/dynamics-rotary-tumbler. Welcome to the RTH Forum! Glenn P.S. You know how to parachute???
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Post by hummingbirdstones on Jul 29, 2018 10:21:00 GMT -5
Welcome from Northern Arizona!
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dbcooper
off to a rocking start
Member since July 2018
Posts: 6
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Post by dbcooper on Aug 8, 2018 8:24:27 GMT -5
gmitch067 Glenn i am still trying to figure out how to use this site. No, I do not know what parachuting is in regards to tumbling. That is interesting you say that about amethyst as the ones ive put into it do not turn out very well. Thanks for the video and explaining the speed features. It makes sense to me now. Ive bascially been allowing it to run wide open through every stage of the process.
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Post by gmitch067 on Aug 9, 2018 7:32:31 GMT -5
gmitch067 Glenn i am still trying to figure out how to use this site. No, I do not know what parachuting is in regards to tumbling. That is interesting you say that about amethyst as the ones ive put into it do not turn out very well. Thanks for the video and explaining the speed features. It makes sense to me now. Ive bascially been allowing it to run wide open through every stage of the process. Good Morning dbcooper, I sent you a message regarding Amethyst tumbles. View the top menu on this page and note there is a number next to the heading "Messages"... click on that menu item to read your messages. Also in the menu system is one called "My Profile" In that section you can see if other members have replied to your threads ("Notifications") and setup and personalize your user profile. You can even create a new message under this menu selection as well as in the "Messages" menu. If you want to mention a member within your Posts, type in their user name and put an ampersand (@) before it. When you send your post the ampersand disappears and the member's name is highlighted. The Member will get a notification that he/she has been tagged. Check out the "User Guide" menu for more. I hope this helps. Glenn
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