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Offline toleary34
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« Reply #20 on: May 09, 2010, 10:14:32 am »
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    how long do you usually leave things in the tumbler for?  does it just depend on what effect you are looking for? or do yo usually leavie it in there for a set time, and what is that average time?

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« Reply #21 on: May 09, 2010, 11:37:27 am »
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With a rolling tumbler it can take up to 6 weeks depending on the rocks and how smooth they were to start with.

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« Reply #22 on: May 09, 2010, 03:25:56 pm »
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Thanks Seldom and can you tell me at what speed dose it turn at RPM Toleary34 on the previous page Seldom tells you how he dose it and what grid he uses it's good information

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« Reply #23 on: May 09, 2010, 04:56:07 pm »
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Slow 20 to 30 rpm 

xavier you have seen the vibrating brass cleaners that people who reload their ammo use, I bet. Well the vibrating rock polisher works the same way. The only different  I see is that the tub on the RP is heavy duty. I have a brass polisher that I use to clean silver castings don't know why it want work on rocks. 

Types of Tumblers


Two types of tumblers are used by most hobbyists: 1) rotary rock tumblers; and, 2) vibratory rock tumblers. Each of these has advantages and disadvantages. If you want to buy a rock tumbler or a rock tumbler kit, the best thing that you can do is learn about each of them and make an informed decision. There are also inexpensive tumblers made to introduce children to the hobby. These kids tumblers have plastic barrels - they make a LOT of noise and will wear out quickly - but they have a lower price.

For beginners we recommend a hobbyist-quality rotary tumbler with a metal frame and a soft rubber barrel. They cost a bit more but they run quietly and will last for years.

In summary, rotary rock tumblers are the most popular. They have the ability to transform angular rock fragments into rounded rock fragments in five to six weeks. In contrast, vibratory tumblers do little to alter the shape of the rock, instead they are more efficient at smoothing the surfaces of the rock quickly - they require about one to two weeks to process a batch of rock. So, if you want nicely rounded stones get a rotary machine. If you want angular stones get a vibratory machine.

Rotary rock tumblers are typically less expensive than vibratory tumblers. Expect to spend at least $80 for a small rotary tumbler with a rubber barrel or about $200 for a small vibratory tumbler.

The best of both worlds is to process the rocks in a rotary tumbler for the coarse grind to achieve a rounded shape. Then use the vibratory tumbler to quickly do the fine grind, pre-polish and polishing steps.


What Are Rotary Rock Tumblers?


A rotary tumbler has one or more barrels that the rocks are placed in. Multiple barrels allow you to tumble two or more batches of rock at the same time. You can tumble two different types of rock. Or, you can tumble two batches of rock at different stages of the tumbling process. The barrels are turned by a motor and the rocks tumble inside of the barrel, rubbing against one another and wearing their way smooth.

A number of companies manufacture rotary tumbling machines. They are the most commonly used type of tumbler. The photo at the top right of this page shows rotary rock tumblers from (left to right) Lortone, Inc., and Thumler's Tumblers. We own several Lortone tumblers and two Thumler's tumblers and recommend both of these brands.

The tumblers shown are made with metal frames, have durable rubber barrels and will tumble two or more pounds of rock at a time. They are designed to give years of reliable service if they are cared for properly.

Plastic tumbling machines for children are also sold. These plastic tumblers cost less and are designed to tumble a small handful of rocks at a time. These plastic-barrel tumblers make a LOT of noise and will last for just a few batches of rock if you are careful and do not overload them. They are suitable purchases if you simply want to introduce a child to the rock tumbling experience and move up to a "hobbyist's tumbler" if the activity is enjoyed. We recommend buying a full-size rotary tumbler with a metal frame at the start if you know that you will continue with the rock-tumbling hobby. More about rotary tumblers.


What Are Vibratory Rock Tumblers?


Vibratory tumblers have a bowl instead of a barrel. Rocks, grit and water are loaded into the bowl, covered, then allowed to vibrate. This vibrating action causes friction between the rocks and grit and results in rocks with smooth surfaces. The action in a vibratory tumbler does little to round the shape of the rocks. Vibratory tumblers can process a load of rocks in about 50% of the time required by a rotary tumbler. Shown in the photo at the top of this page are vibratory tumblers from (left to right) Johnson Brothers and Thumler's Tumblers.


Which one should you buy?


The type of tumbler that you should buy depends upon the types of material that you will be tumbling, how fast you need results and how much rock you have to tumble. Here are some advantages and disadvantages of each.

Rotary Tumblers
Advantages
     Very easy to use - best for beginners.
  Lower cost than a vibratory tumbler.
  Shapes rough into rounded stones.
  They run quietly if you get a rubber barrel.
Disadvantages
     Each tumbling step takes about one week.
  Requires more grit and polish.
  Occasional leaks..

Vibratory Tumblers
Advantages
     Tumbling takes a few days per step.
  Requires less grit and polish.
  Gentle action polishes fragile rocks.
  Does not leak.
Disadvantages
     Rough rocks receive minimal shaping.
  A bit more challenging to use.
  More expensive.
  More noise that a rubber-barrel rotary machine.
  Vibrations! They can "walk" or shake the building.
  Some must be attached to a weight or to the floor.

In summary, if you are starting out with crushed rocks with jagged edges and desire tumbles that are nicely smoothed and rounded then a rotary tumbler is best for you. A vibratory tumbler does not do a lot of shaping so if you put in angular rocks your finished product will be angular tumbles. On the other hand, if you are working with pre-shaped rocks (such as beach stone or cut cabochons), thin slabs, or very delicate material such as glass or obsidian then a vibratory tumbler would be more effective.

Also, if you opt for a rotary tumbler, purchasing a double-barrel tumbler is helpful in reducing tumbling time. Two barrels allow you to simultaneously tumble rocks in two different steps of the tumbling process, or rocks of two different hardnesses.

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Offline xavier
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« Reply #24 on: May 10, 2010, 02:50:24 pm »
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 Cheesy Cheesy Now that's what I call getting some info Thanks seldom saved it in My documents.

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So many questions so little time

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« Reply #25 on: May 10, 2010, 03:48:02 pm »
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   whoa....well there you go....everything i was wondering about...thanks seldom

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Offline BitburgAggie_7377Topic starter
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« Reply #26 on: May 10, 2010, 03:50:10 pm »
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Everything?Huh?Huh???  knowing you, I rather doubt it  Wink

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« Reply #27 on: May 10, 2010, 03:52:28 pm »
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   true....true....not everything, but the basic foundations to start. Smiley

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« Reply #28 on: May 10, 2010, 03:55:20 pm »
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Quote:Posted by BitburgAggie_7377
Everything?Huh?Huh???  knowing you, I rather doubt it  Wink


LOL Yeah I am not buying that, keep asking that's why we are here.

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« Reply #29 on: May 10, 2010, 04:01:16 pm »
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hey what can i say?.....knowledge is power.  what would i do without friends like you guys to ask questions to about this stuff?  This forum is one of my best sources of history and vetting the truth behind legends and stories.  thank you all very much for the opportunity to learn from you all

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