Experience building and using Mikes hand trommel
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  1. #1

    Jul 2014
    97
    62 times
    All Types Of Treasure Hunting

    Experience building and using Mike's hand trommel

    I came across these plans and it looks like a good idea for those of us who classify before running sluice.

    http://mlaine.homeip.net/Trom/

    Thanks

  2. #2

    Jul 2014
    97
    62 times
    All Types Of Treasure Hunting
    I purchased everything on the Bill of Materials today at Home Depot for $73. ($15 of this cost was for the 1 3/8" hole saw bit). I recall reading another thread where some others followed the plans and made the hand trommel. Prior to start, any suggestions? How has the rig worked for you? Wet or dry material?

    My plan is to use this in lieu of a bucket and grizzley to classify. My goal of course is to make classifying easier and to be able to process more material through the sluice.
    Last edited by matt_unique; Apr 18, 2015 at 08:30 PM.
    davin likes this.

  3. #3
    Charter Member
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    vaquero44 Brandon Moore

    Dec 2009
    Maine
    Deep Tech Vista RG 1000, Deep Tech Vista Gold, Deep Tech RELIC, Garrett prop pointer.....bazooka gold 36" gold trap, Angus MacKirk Grubstake sluice, my version of mikes trommel, echo crevice vac, Gold
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    I have one and did a few little things different my friend built most of it he's got shop and almost every tool known to man went with a 1/4" screen right now with it trying to figure how to build a spray bar system for it you really need water running through your hopper to keep the material wet or like I'm doing at the moment rerun your material back through to get all the fine stuff through it is definitely a lot better then shaky shaky with the classifier in the bucket and killing your back that I got to come up with a bottom feed tray type thing to feed the sluice or bazooka
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    always on the quest of finding the machine that fits me!

  4. #4

    Jul 2014
    97
    62 times
    All Types Of Treasure Hunting
    Thanks
    I decided to add to the BOM with nylock nuts, fender washers, 1/4" screen to wrap around the sturdier 1/2", extra bucket to enable cutting out a single piece chute, etc. Added another $47 to the cost which trotals $105. I made the cuts today, will start build tomorrow. I too want to figure out the best way to add a spray bar.
    davin likes this.

  5. #5
    Charter Member
    us
    vaquero44 Brandon Moore

    Dec 2009
    Maine
    Deep Tech Vista RG 1000, Deep Tech Vista Gold, Deep Tech RELIC, Garrett prop pointer.....bazooka gold 36" gold trap, Angus MacKirk Grubstake sluice, my version of mikes trommel, echo crevice vac, Gold
    1,264
    327 times
    All Types Of Treasure Hunting
    yeah I started building a spray bar system today ran out of parts so we'll see what happens
    always on the quest of finding the machine that fits me!

  6. #6
    us
    Dec 2012
    Concrete, WA
    Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
    3,522
    6092 times
    Prospecting
    Built one myself several years back, and it served me well
    when mining down in the Calif. desert. For dry materials
    it's the cat's meow, but running wet material is near
    impossible without a spray bar.

    What you can do is buy a 12V bilge pump and just use
    the hose to spray down the material as it's going through.
    I thought about building a spray bar, but washing the material
    down with the pump/hose combo works quite well, so I never
    saw the need to go to the effort of making a proper bar.

    I set the trommel up to run a bit flatter, and drop about 2 gal.
    of aggregate with rocks as big as 4" into the hopper. Then start
    washing from the hopper into the trommel, and turn slowly.

    Made mine with 1/2" screen, and then made up 1/4" screen that
    fit over the top of the 1/2", held tight by bungee cords.

    Doesn't take long at all, and you know your material is well washed.
    Last edited by DizzyDigger; Apr 20, 2015 at 12:54 AM.
    davin likes this.
    Mike (aka Dizz)

    "If you love wealth better than liberty, the tranquillity of servitude better than the animating contest
    of freedom, go home from us in peace. We ask not your counsel nor your arms. Crouch down and lick
    the hands which feed you. May your chains set lightly upon you, and may posterity forget that you
    were our countrymen." ~~ Samuel Adams, 1776

    Dizzy's Super-Simple, Universal Rule of Forum Conduct: Don't be an ass.

  7. #7
    Charter Member
    us
    vaquero44 Brandon Moore

    Dec 2009
    Maine
    Deep Tech Vista RG 1000, Deep Tech Vista Gold, Deep Tech RELIC, Garrett prop pointer.....bazooka gold 36" gold trap, Angus MacKirk Grubstake sluice, my version of mikes trommel, echo crevice vac, Gold
    1,264
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    yeah i'll be hooking up a 1500 gph bildge the toppump using 3/4" pvc I have a spray over the hopper and and spray bar totally across the screen along the top of it .......its almost done just got drill holes and get 2 3/4" end caps and 2 1" tee's for support
    davin likes this.
    always on the quest of finding the machine that fits me!

  8. #8

    Jul 2014
    97
    62 times
    All Types Of Treasure Hunting
    I already have the pump. I'll explore a spray bar mount once I have finished the basic trommel. If digging dry riverbank I would think it would be fine as is but I often dig wet.

    Mike the designer has been very fast to respond to questions. For wet material he shovels some water (or uses a pan to add water before rotation). He has also literally placed it in the river so the trommel is half submerged with a bucket underneath weighed down with a rock.

    Where I go water that deep would be fast moving (ha) so spray bar it is.
    davin likes this.

  9. #9
    Charter Member
    us
    vaquero44 Brandon Moore

    Dec 2009
    Maine
    Deep Tech Vista RG 1000, Deep Tech Vista Gold, Deep Tech RELIC, Garrett prop pointer.....bazooka gold 36" gold trap, Angus MacKirk Grubstake sluice, my version of mikes trommel, echo crevice vac, Gold
    1,264
    327 times
    All Types Of Treasure Hunting
    what I do sometimes I usually put the pump inside a bucket lay it on its side and drive a spike in the ground to hold the bucket..........I see something I really liked to there is a member here sluicelee that took a 1000 gph bildge pump made a mini dredge out of it and work like a charm right into a bazooka style fluid bed DIY sluice..........some of these DIY builds I like better I learned that sometimes a longer slick plate is not always better.......just my opinion and experience anyways
    davin likes this.
    always on the quest of finding the machine that fits me!

  10. #10

    Jul 2014
    97
    62 times
    All Types Of Treasure Hunting
    I fixed the image....this is what I built so far. I plan to add higher legs and a spray bar. Vaquero - kindly share a pic of your spray bar when you get a chance. Let me know how your tests go.

    I tested it with wet gravel near the house and it worked pretty good. Some dirt clung to the rocks but I think a good spray bar will fix that problem.

    Click image for larger version. 

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    bobw53 and vaquero44 like this.

  11. #11
    Charter Member
    us
    vaquero44 Brandon Moore

    Dec 2009
    Maine
    Deep Tech Vista RG 1000, Deep Tech Vista Gold, Deep Tech RELIC, Garrett prop pointer.....bazooka gold 36" gold trap, Angus MacKirk Grubstake sluice, my version of mikes trommel, echo crevice vac, Gold
    1,264
    327 times
    All Types Of Treasure Hunting
    hey matt I will.......... its not perfect but I got it zip tied into position but I haven't had time to finish yet ............have been under the weather wicked sinus cold has taken a hold of me plus a absessed tooth to boot and trying to get a dentist not fun at all but will try to finish by the weekend.......from what I 've seen in the experience of trommel's you want to almost a more than a trickle of water into the hopper and the screen at the top blasting the smaller of the bigger rocks as they roll through screen I've put to control valves on mine to control flow of each also just a suggestion that I wouldn't glue any parts of the spray so you can adjust it
    Last edited by vaquero44; Apr 22, 2015 at 05:14 PM.
    always on the quest of finding the machine that fits me!

  12. #12
    Charter Member
    us
    vaquero44 Brandon Moore

    Dec 2009
    Maine
    Deep Tech Vista RG 1000, Deep Tech Vista Gold, Deep Tech RELIC, Garrett prop pointer.....bazooka gold 36" gold trap, Angus MacKirk Grubstake sluice, my version of mikes trommel, echo crevice vac, Gold
    1,264
    327 times
    All Types Of Treasure Hunting
    well check it out see what you think Matt? put it together real quick like and I think its going to do ok my holes are a little off on the line but that might help things out a little but anyways here it is!
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    always on the quest of finding the machine that fits me!

  13. #13

    Jul 2014
    97
    62 times
    All Types Of Treasure Hunting
    Nice looking setup. Have you tested it with wet gravel?

  14. #14
    Charter Member
    us
    vaquero44 Brandon Moore

    Dec 2009
    Maine
    Deep Tech Vista RG 1000, Deep Tech Vista Gold, Deep Tech RELIC, Garrett prop pointer.....bazooka gold 36" gold trap, Angus MacKirk Grubstake sluice, my version of mikes trommel, echo crevice vac, Gold
    1,264
    327 times
    All Types Of Treasure Hunting
    I haven't yet still dealing with this miserable cold drilled out the holes 3/16" also I used no glue other than the leg support at the end of the screen you want to be able to adjust it while testing our out in the field
    always on the quest of finding the machine that fits me!

  15. #15

    Oct 2014
    The West
    Whites 6000 D Looking to find enough to replace it. Replaced it with a Garrett 350
    101
    82 times
    All Types Of Treasure Hunting
    If there was a swivel fitting that could be placed in front of the handle, then you could use the support pipe for a spray bar. Just thinking out loud.
    “Suppose you were an idiot. And suppose you were a member of congress. But I repeat myself.”
    Mark Twain
    “The budget should be balanced, the Treasury should be refilled, public debt should be reduced, the arrogance of officialdom should be tempered and controlled, and the assistance to foreign lands should be curtailed lest Rome become bankrupt. People must again learn to work, instead of living on public assistance.”

    Marcus Tullius Cicero

 

 
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