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DIY Trommel on a Shoestring Budget


malo

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Trom001_002.jpg

Here you'll find plans to build an inexpensive, compact, and light weight hand trommel. It is designed to classify quantity material for your dry-washer, highbanker, sluice, pan, or garden, and can also be used as a worm harvester, gemstoner, or even an arrowhead sifter. The cost of parts is around $50 US.

Ergtrom.jpg

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Right up my budget..... I just printed out the directions. thanks for taking pictures and posting this.

Joe

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  • 2 weeks later...

Did it and it works great....... thanks for the directions.

Joe

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Looks good but paint it! UV kills the plastic quick

I found that out with a five gallon pail i left out in the yard for a few months...... picked it up full of rocks and it broke in pieces. Point well taken :rolleyes:

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I did research on the type of buckets before building this. Home Depot had the .75 mil bucket which far outlasted the much less substantial Lowe's bucket. I would imagine that a white bucket of .75 mil+ would be a better call than orange but I liked the color scheme and am not likely to leave the bright orange beast out in the field at quitting time. I don't leave any of my tools outside, exposed to the elements for any length of time when I'm not working with them so time spent in UV is not much of an issue. I've used my trommel for a season now in the desert southwest and the bucket material is still perky as new. I did buy a full brimmed hat though, as my bucket head can't take any UV. :thumbsupanim

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  • 3 weeks later...

After careful consideration here's the plan.......... replace the bottom bearing with the same four-way as the top. Plug the top of the axle near the coupling, plug both sides of the lower four-way so water doesn't leak. Use a PVC reducer with a regular hose bib on the outer four-way................ no need for swivel fitting and it has water flow control to boot! Drill adequate holes in axle for water spray towards top of the trommel and add spray shield of 1/2 cut length of 2 1/2" PVC tubing suspended over the hopper part of the axle. Those picky about water drip can implement an O-ring to the bottom axle/bearing connection. Add your sluice and recirculating pump. Waaaaaallllllla! You have your shoestring budget highbanker/recirculating sluice adaptable for just about any type of recreational prospecting whether it be drywasher, highbanker, stream fed sluicing, or classifying for the pan.

What fun!

Mike

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  • 3 years later...

booty.jpg

AU Seeker,

My DYNDNS service is temporarily webhopping/redirecting my server's address to a friend's home where there is a small Raspberry Pi backup of my server. I have since moved everything to a pay host and it is permanent with a new address. I will keep the redirect as long as I can but am changing as many addresses on blogs as I can before the Pi melts down. I hate dead links and will do everything I can to prevent it.

http://mlaine.net/Trom

Thanks,

Mike Laine

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  • 6 years later...
On 10/3/2015 at 1:26 PM, Au Seeker said:

Mike your link in your original post still works, I'm not sure how that can be if the server isn't existing any longer?

Does anyone know if Mike is OK? This site hasn't heard from him for a long time - :aw-shucks:

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Looks like simple enough plans. Think that would be far more productive than bucket classifying. Saved the link, for looking at more later.

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1 hour ago, Red_desert said:

Looks like simple enough plans. Think that would be far more productive than bucket classifying. Saved the link, for looking at more later.

It works very well- I shoveled cobble with mixed in dirt into it and it did a very nice and fast job of classifying it without me having to stoop and shake or lift classifying pans - the rocks around the base in the photo were all very quickly sorted out by it:

 

5945F4DC-8AE1-4602-A30E-821C9141B599.jpeg

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I was thinking, that might be a good productive way, if you had a small crew on a claim. Have one person who can build them right and make a few. Then another to process the gravels, using some productive method. Watched a recent YouTube, prospector from Denmark (think, I'll check again) designed a sluice box, for working glacial gravels which have a lot of over-burden.

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Different prospector but has captions in English. Some thought the riffles should have been more of an angle, for better cathing the fine gold.

I would think a DIY trommel with DIY fine gold sluice, could be a winning combination.

 

 

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1 hour ago, Red_desert said:

Different prospector but has captions in English. Some thought the riffles should have been more of an angle, for better cathing the fine gold.

I would think a DIY trommel with DIY fine gold sluice, could be a winning combination.

 

 

That looks like a really well-built sluice box.

I forget where I saw it, but someone used a length of small diameter hose and zip-tied it in a reverse spiral inside the trommel that would catch and keep small stuff going up for more turns so it had a better chance of falling through the screen.

And Mike’s video it is still on YouTube that shows him using his DIY Trommel in a river. You’re right,  combining it with a sluice box would be a good set up and inexpensive too!

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