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  1. #1
    us
    Jun 2008
    Calabash, North Carolina
    Ace 250/Ace 350
    82
    1 times
    All Types Of Treasure Hunting

    How to make a Rock Tumbler

    How to make a Rock Tumbler

    #1. Go to your local Good Will or Thrift Store and get a cheap Box Fan with a speed control.
    Strip away everything until you have just the motor and housing with the speed control.



    #2. Go to Walmart and get a small Igloo drink cooler. Make sure it is round with no handle.
    Also get a plastic File Rack that you can use as a frame



    Take the lid off and drill a hole in the center of the lid top, and the center of the bottom
    of the cooler. Install bolt part of a sheetrock hanger from the inside with some plumbers
    putty or rubber gasket. Put the wing nut part of the assembly onto the bolt and tighten.
    Cut the bolt so there is approximately 1 showing on either end. Glue some paddles onto
    the inside of the cooler so that the coins or rocks will tumble. I used some threaded rod
    that I had, but anything will work. Put lid on cooler.

    #3. Mount the motor housing with motor onto the base of the File Rack. Shaft toward one side.
    Make sure to center the motor in the frame.

    #4. On the side of the File Rack that is above the shaft of the motor, drill a hole a bit larger than
    the bolt in the cooler. Make sure it is in the center and above the shaft of the motor.
    Insert the bolt opposite the lid into the hole you drilled in the File Rack. Measure where the
    bolt in the lid will be on the file rack frame. Leave room for the bolts to move back and forth.
    Drill holes opposite of each other on the frame. Drill a hole in the center of the bolt coupler.
    Install long bolt into each hole and connect together in middle with coupler.



    #5. Put the cooler onto the file rack frame bottom first. Rotate the coupler so the holes facing up.
    Adjust the length of the bolt in the lid to just fall into the hole of the coupler. Now rotate the
    coupler down so the hole is in line with the bolt. The cooler should fit and rotate freely.

    #6. If you were able to save the speed control now you wire it to motor and dry run to see if it
    works for you. On my tumbler the speed control was faulty so I just run one speed.


    #7. Remove the cooler from the frame and put a rubber band around the belly of the cooler.
    Re-install the cooler to the frame and stretch the band to the motor shaft. If your speed control
    works than you can adjust to the speed that you want. If not you will need to try different
    pulley depending on the speed of the motor. I run mine directly off the shaft of the motor
    and it is perfect speed for tumbling. You now have a rock tumbler. My total cost $15.00




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  2. #2

    May 2008
    469
    202 times

    Re: How to make a Rock Tumbler

    I admire your ingenuity! If I was a clad hunter I would build one. Nice work.

  3. #3
    th
    Nov 2010
    Thailand/Europe/California
    Excalibur 2 1000
    1,031
    131 times
    All Types Of Treasure Hunting

    Re: How to make a Rock Tumbler

    Nice job, and great ingenuity, but being lazy, I would just go to HF and buy one, and probably wouldnt even have all the parts around the house, also I would be afraid of the motor overloading, and burning the house down, since a fan is much lighter than a cooler full of coins.

  4. #4
    us
    Feb 2012
    Saint Paul, MN
    16
    All Types Of Treasure Hunting

    Re: How to make a Rock Tumbler

    Nice job! I've been thinking about purchasing a portable electric cement mixer to use as a large capacity tumbler.
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    Don't let the truth get in the way of a good story.
    If you want a peice of fruit from the tree, you don't ask, you just gotta' go up there and pluck it.

  5. #5
    us
    Endeaver to perservere

    Mar 2008
    Aloha, Orygun
    wishing stick
    1,368
    22 times
    Searching

    Re: How to make a Rock Tumbler


    HF cement mixer is $140 but for the DIY type maybe a 5 gal bucket and a BBQ rotiserie motor mixed with cheap rollers and a wood frame might be OK.
    Just a thought.
    Grey
    Nothing stated may be true as far as we know
    Seek professional advice. Some items are limited
    Not available in all states. Illigitimi non carborundum. Carpe oro.

  6. #6
    us
    Jul 2011
    denver, colorado
    M6/coinmaster
    658
    3 times
    Metal Detecting

    Re: How to make a Rock Tumbler

    I have a tumbler I use for bird taxidermy I'm ging to try...

  7. #7
    us
    Endeaver to perservere

    Mar 2008
    Aloha, Orygun
    wishing stick
    1,368
    22 times
    Searching

    Re: How to make a Rock Tumbler


    How do you use a tumbler for taxidermy?
    You could take off feathers and maybe splinter bones but then what?
    Nothing stated may be true as far as we know
    Seek professional advice. Some items are limited
    Not available in all states. Illigitimi non carborundum. Carpe oro.

  8. #8
    us
    Oct 2004
    Ohio
    Tesoro Compadre (Soon to be teknetics T2SE)
    209
    2 times
    Metal Detecting

    Re: How to make a Rock Tumbler

    Quote Originally Posted by greydigger

    How do you use a tumbler for taxidermy?
    You could take off feathers and maybe splinter bones but then what?
    tumblers are usually used in conjunction with sawdust to help dry wet tanned furs/hides, at least thats my understanding of their purpose in taxidermy

  9. #9
    th
    Nov 2010
    Thailand/Europe/California
    Excalibur 2 1000
    1,031
    131 times
    All Types Of Treasure Hunting

    Re: How to make a Rock Tumbler

    I wish I had enough coins, so I would need a cement mixer!

 

 

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