56loaches
off to a rocking start
Member since July 2020
Posts: 5
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Post by 56loaches on Jul 12, 2020 11:08:20 GMT -5
I have gotten into tumbling exotic wood scraps. I have been semi successful fitting a headless threaded bolt into an old drill and securing a 1 gallon plastic jar, by the lid. The loaded jar then rotates on four furniture casters. The problem is that I can not get the drill speed down slow enough to assure continous tumbling. It tends to |ake Off" and simply spin WAY too fast. have tried an attenuator on the electric power, but it doesn't work either.
I have acquired a gemstone tumbler motor. They shaft is, however, a straight metal rod with a short flattened section at the tip. Is there some kind of doohickey I could use to connect some kind of threaded item on the end of the shaft? Possibly a female barrel/fitting with a pressure screw fitting and a threaded shaft extension? I can see it in my mind, but have no idea if it's made or what it would be called. Any suggestions would be appreciated. Kevin
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Post by pauls on Jul 12, 2020 16:49:41 GMT -5
Welcome Kevin from Australia. Have a bit of a look through the forum you will see a lot of threads about building tumblers, they are actually quite a simple machine and can be put together with just a little bit of mechanical knowledge. I think what you are attempting is taking simplicity a step too far though, as you have discovered you need it to be durable as well. Here's a parts list for a simple tumbler, just the mechanical bits, you can make a frame from wood or steel. It's a bit hand wavey because you can really suit yourself with a lot of this. Two pieces of 5/8 steel rod each a foot and a half long, (they can be shorter)depends on your barrel length. Four pillow block bearings with 5/8 inch centre for the shafts to run in. One small 1 1/2 inch pulley to fit on the shaft of your motor. One six or seven inch pulley to fit on the end of one of your shafts. If you want it to turn quicker make this pulley smaller. I like to drive both shafts but that requires a couple of extra pulleys and a belt, you will probably get away with just putting a bit of rubber hose on your rollers and having the second shaft just rolling. A V belt, length depends on the frame you build. A tumbler barrel, I think for what you are doing a gallon paint tin would be OK, we have to have fairly sturdy barrels for rocks of coarse. Make a frame and you are in business
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56loaches
off to a rocking start
Member since July 2020
Posts: 5
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Post by 56loaches on Jul 13, 2020 3:33:44 GMT -5
Thank you, Pauls for a thoughtful answer to a question I did not ask. I clearly know the design/type of tumbler I need for the wood pieces I mention, but am simply looking for the final element as I describe. Thanks again for responding.
Anyone else have an idea?
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EricD
Cave Dweller
High in the Mountains
Member since November 2019
Posts: 1,142
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Post by EricD on Jul 13, 2020 7:36:11 GMT -5
Use a piece of fuel hose for a coupler between your tumbler motor and your threaded rod. It'll still turn too fast though. Around 1550rpm. Which is why you should think about advice that is given without so hastily discounting it.
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Wooferhound
Cave Dweller
Lortone QT66 and 3A
Member since December 2016
Posts: 1,432
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Post by Wooferhound on Jul 13, 2020 8:02:54 GMT -5
A drill is not designed for continuous use and will not last a month. Normally you would attach a pulley to the shaft and then a motor and belt.
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56loaches
off to a rocking start
Member since July 2020
Posts: 5
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Post by 56loaches on Jul 13, 2020 12:24:49 GMT -5
Use a piece of fuel hose for a coupler between your tumbler motor and your threaded rod. It'll still turn too fast though. Around 1550rpm. Which is why you should think about advice that is given without so hastily discounting it. oh...please don't misunderstand me and I apologize if I mis-represented my story. I did not discount the advice, but rather, have explored the options and am trying to solve this in the way I've mentioned. If I can not...I will certainly return a more conventional approach. Thanks again. Kevin
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56loaches
off to a rocking start
Member since July 2020
Posts: 5
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Post by 56loaches on Jul 13, 2020 12:27:38 GMT -5
A drill is not designed for continuous use and will not last a month. Normally you would attach a pulley to the shaft and then a motor and belt.
Thanks. I understand the limitations of a drill and if you'll note, I mentioned having now found a true tumbler motor. Concerning your "Normally" scenario...it it the one I'm trying to avoid. Direct drive is my aim...but thanks for the advice Kevin
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EricD
Cave Dweller
High in the Mountains
Member since November 2019
Posts: 1,142
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Post by EricD on Jul 13, 2020 18:10:57 GMT -5
Sounds like there's only one way to design this machine that we have no idea about (visually).
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56loaches
off to a rocking start
Member since July 2020
Posts: 5
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Post by 56loaches on Jul 13, 2020 22:31:52 GMT -5
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EricD
Cave Dweller
High in the Mountains
Member since November 2019
Posts: 1,142
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Post by EricD on Jul 14, 2020 7:51:53 GMT -5
Why do I feel like used toilet paper?
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Post by RickB on Jul 14, 2020 8:03:20 GMT -5
Why do I feel like used toilet paper?
You been dumped on.
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Post by knave on Jul 14, 2020 8:16:05 GMT -5
Eric guys like you are scarce, in high demand, and worth lots of money. Oh you said used, hmm
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Post by knave on Jul 14, 2020 8:16:50 GMT -5
I’m interested in his direct drive 1500 rpm tumbler Edit: fixed spelling error
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EricD
Cave Dweller
High in the Mountains
Member since November 2019
Posts: 1,142
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Post by EricD on Jul 14, 2020 8:24:31 GMT -5
I’m - interested- in his direct drive 1500 rpm tumbler Hopefully he gets video of it! Won't have a lot of time to do so if he can even get the motor to turn it without reduction
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Post by RickB on Jul 14, 2020 9:16:41 GMT -5
I’m interested in his direct drive 1500 rpm tumbler Edit: fixed spelling error It will be "Faster than a speeding bullet." It's The Lone Ranger Superman.
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Post by knave on Jul 14, 2020 12:05:15 GMT -5
Faster than a speeding waistband.
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Post by pauls on Jul 14, 2020 17:49:26 GMT -5
Ah well, I guess we'll never learn the right way to tumble at 1500 RPM now. Troll or what?
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Post by RocksInNJ on Jul 14, 2020 21:44:12 GMT -5
You don’t need a drill. Just throw the rocks into a Ninja blender.
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Post by knave on Jul 14, 2020 22:09:16 GMT -5
You don’t need a drill. Just throw the rocks into a Ninja blender. With sea monkeys
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Post by RocksInNJ on Jul 14, 2020 22:51:30 GMT -5
You don’t need a drill. Just throw the rocks into a Ninja blender. With sea monkeys Lmao, you remember that huh?
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