Diy acrylic concentrator

Dallasb84

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Jun 3, 2016
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Well in addition to the sluice I wanted to make a concentrator on a budget. Like less than $150 budget!!!![emoji28][emoji28][emoji28] well so far so good. I set out looking at what is out there and works well and decided to use those products as inspiration. I in no way shape or form am trying to take away from the reputable company that makes an awesome product I wish I could afford. With that being said I hope you guys enjoy the show as... It probably isn't gonna work but ... Hard to say without knowing.

Well, as a forward I do want to say I did use products currently out there as my inspiration... I did not however try and copy the design... I did not try and figure out the angles and or reverse engineer at all. I did however look at it and think it was a great idea and modeled after it.

I figured 8x10.5 runs would be enough and started with that. I laid out 2ea 8x18" (or so) rectangles and cut out my plexiglass. I then laid out 2" legs and bent them to what I thought looked good enough. Copied the bend on the second tray. Next I bent a complement angle on the opposite end on both pieces. I made the trough by simply clamping a piece of pvc to the acrylic and wrapped it over the 1.5" pipe. Simple enough.

I laid up a small run that is 8x10 with a 2" leg. This piece will be at the top and be what I drop my materials on.

I step the pieces on end on a large flat piece of plexiglass to get my overall dimensions. I nested the legs in the troughs to eyeball how the leg will interface with the trough to create the "under flow"? As some folks have called it. Placement was by eyeball and what looked to probably work.

Once all set up I prepared to bond it all together. I set it all where I wanted and dotted the pieces with a sharpie. I then dabbed super glue on the dots and placed my pieces back over the dots for alignment. After the super glue set I brushed epoxy over the joints. I followed with a bead of silicone to seal it all together.

Next I laid out my v rib mat and cut it to size... So far so good. Next up is a water basket thingy I can run a sump pump to. More to come. ImageUploadedByTreasureNet.com1466080334.679104.jpgImageUploadedByTreasureNet.com1466080351.238361.jpg

Once again... My better half will wake up to a disaster!!!! [emoji16][emoji16][emoji16][emoji16] again... Not trying to promote ripping off some one else's design. The chances of this thing working are slim to none and if I had the disposable income I would have purchased those products. Cheers.
 

Well did a clear water run in the bathtub and this baby seems to work like I imagined.... Sorta. Probably am just a bit crooked on the first tray as the water kinda flows more to one side but I bet that will work itself out when I can control flow and have my mats all installed. Time for bed.
 

Looks like some good work. There's nothing wrong with homebuilding a copy of a commercial unit. Looks like you did a great job on an acrylic DIY goldcube. Use a level and make sure it's all square and true. Can't see how you plumbed the water to it, so can't offer help for your off-kilter flow.

Good luck!
 

Well she works!!!!! Like a freaking champ too! Took some time to get it all together but she's right! Here are some shots!

Ball valve works great to control flow!

ImageUploadedByTreasureNet.com1466183194.365838.jpgImageUploadedByTreasureNet.com1466183209.956788.jpgImageUploadedByTreasureNet.com1466183222.079877.jpgImageUploadedByTreasureNet.com1466183237.802465.jpg

Using a 1000gph HF special bilge pump ran off a jump pack. Bought the 2 year warranty for the pump just in case!

Bought to head out and get some cons!!!

Oh yeah busted my budget if you include the jump pack. If not.... The acrylic concentrator and my acrylic sluice is $150 on the dot.

Ultra sonic miller table coming up next!
 

Does anyone have a way to fasten ribbed mats so you can remove for clean up?
 

You can use a tape for the sides like in this video:


Or you can use a rainwater gutter over your v-mat like in the gold extractor concentrator. (The gold extractor had deep v-mat + rainwater gutter to catch the fine gold.)
gold_gold_extractor1.jpgGold-Extractor.jpg
 

Does anyone have a way to fasten ribbed mats so you can remove for clean up?

I put a heavy strip of Gorilla tape across the upper end of the mat and fold it over the entry end of my stream sluice and clip the mat in place with paper binder clips. https://www.google.com/webhp?source...76&ion=1&espv=2&ie=UTF-8#q=paper+binder+clips
My setup is ribbed mat* followed by gold hog mats so I side tape the entire length as per instructions for installing the gold hog mats.

Good luck.

*For the first 10" the ribs are parallel to the flow and then 2" are lateral and serve as an indicator mat section but mostly ribbed mat was used as a means to attach the gold hog mats in my sluice and have an area to feed it material that has a smooth transition. The ribbed section is glued to the gold hog mats.
 

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Thanks for the replies!!! I was using black tape to just tape down the top. I like the tip of taping the sides of the mat to seal it off!!!
 

Instead of tape, use pond liner instead. Follow Gold Hog's installation but keep the sides higher than the water. Make sure that the mat has no gaps where it joins to the pond liner, or gold will get between the mat and pond liner. Makes cleanout a lot faster!
 

I wonder how well a small bit of miners moss would work when you are only running the fines from the get go.... I'm thinking it would just clog up. Not sure.
 

What hight should the gap be in the boil box for -8 mesh concentrates?
 

I wouldn't be able to answer that. I think trial and error is necessary. I eyeballed it and got lucky. Made my sluice narrower than the aforementioned machine I used as inspiration. My kit is a pita to clean as I have to reach in and roll my matting out. I didn't make it stackable. I also have to reach in to secure my mat.

I would try equidistant on center. If you have .5" radius keep .5" or more height. To low and you will increase velocity and promote clogs. When I eyeballed mine I thought about maintaining an equal velocity of the water. Mine is 3/8 to .5" high. My bigger pieces tumble in the boil box. I can adjust water flow and level the machine to control how the concentrates act and eject visually.

I did notice something by watching the material. As bigger pieces stay in the trap and tumble around the velocity increases a bit and it works a better.
 

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