michael therrien: You gave me an idea. Using glass as a slick plate.
jem mountainman: in CA its pans and hands only..free..sluices are ok,but cant take material
thats not in water..can only take it from river and the high water mark...i
think..i use shovel..
Pat Watters: You were the gentleman who was doing the demonstration at the Denver gold
show, correct? I'm the fellow you cleaned up the fine gold I brought. Are
you located in Colorado? If so, and should I order and underflow such as
you have, would you be able to modify mine to do the water flow as your?
jcb337010: Very cool set-up-I'll be sure to check it out-Thanks and God bless!!
Eric Charters: Your wrinkle of using a baffle was also used by ancient miners, and its
action is duplicated by using a rubber mat in a half circle as in an inner
tube. It's use is common in AK and the Yukon. Your technique is primarily
good for coarse gold. Any systems recovery of fine gold does not indicate
at all its recovery percentage of fine gold. A common mistake is to assume
that if the gold is found in the first 2 feet that that is all the gold
coarse and fine that is there and the rest of the sluice
matthew mitchell: okay thanks
matthew mitchell: i was wondering if you could post a video showing what the sluice looks
like with the slick plate turned round because i want to see if i could use
it for a river sluice.. i think i might buy one. good luck
Eric Charters: Well that sounds like high reco 2 the moon alice, but what kind of
throughput are we talking? And with his site there was some guy talking "it
ain't gettin beach gold". So what could be be talkin? It may not work for
him, but what pray tell is he doing wrong so to speak?. Could it be and I
am suspecting a thing here, that his feed is lousy with black sand, & lots
of fines and the device has trouble with even sized feed products possibly
fed fast and furious?
marty mar: very interesting also where is the gold states and locations in usa or the
world maps etc etc :)
LEARNTOPLAYCRAPS: I sent you a couple of messages to your inbox......thanks!!!
Jonathan Doney: great vid, can you please make another showing how you plumbed it up? and
how you runa the pump and water so it circulates?
Morley Brooks: I'm impressed - been panning since 1966 = This is cool
LEARNTOPLAYCRAPS: This is one of the finest pieces of mining equipment I have ever used. I
have run many types of devices and set ups before discovering
Grumpyprospector and UnderFlow Technologies. I will be posting some new
videos soon showing the UnderFlow working on different types of material
and showing you the clean gold it gets in the end. And comparing it to
other types of sluices and set ups.
ColoradoPirateMiners: Wow that would be great to meet up, between my resturant full time job and
making a non profit gold club well ive been swamped. So on sunday my group
will be working a privite claim in blackhawk, we have a gold cube but my
group would like to learn more about your outfit. Coloradopirateminers p.s.
We will post video where and what we are doing.
LEARNTOPLAYCRAPS: No problem with the questions. Keep them coming if you have them. I start
out with a 1/4 inch screen I put in the bottom of a 5 gallon bucket. I cut
some holes in the bottom and the screen is just pushed into it. I also use
a metal mesh pencil holder I bought at walmart for 2 bucks. It takes my
material down to 3/16 if I want. I run mostly 1/4 inch material through it
and if I find lots of fines, I take it down to 3/16. You get clean fine
Gold with the UnderFlow and no panning at the end.
LEARNTOPLAYCRAPS: Yes Mitchell, I will.I have a bunch of new videos coming with footage of me
using the UnderFlow in real time so you can see how quick my mining process
is and how fast you can get the gold from your material.It is by far and
above the most versatile sluice because of the flip-over slick plate that
allows for using the UnderFlow in a creek or river.There are also models
that have inline classification systems that allow you to shovel right from
your diggings into the sluice without screening 1st.
LEARNTOPLAYCRAPS: 1000 gphr pump is used on my box. I plumb off a line from the main line
with a Y splitter and can control how much water goes in the box or in the
return line. For that demo I think it was roughly 750-800 based on how much
was running through the return hose. I've run clay rich material and all
kinds of beach and river sands through my machine and use the same pieces
of gold from my own horde. I count them and know how big they are. They
always turn up in the first trap no matter what I run.
LEARNTOPLAYCRAPS: Done and done. I'll post a video of my haul soon. Thanks for watching!
LEARNTOPLAYCRAPS: No way for this sluice to rust or any of his other products for that
matter. They are made of high quality aircraft grade aluminum. I have been
using mine for a while now and it still looks great and makes piles of fine
gold for me whenever I use it. Feel free to ask more questions if you have
them. I'm happy to answer. Be sure to tell Mike that I sent you if you
contact them and decide to purchase from them. You will not be disappointed
in the results you get from this sluice system.
Pat Watters: went to the website and shop products tab as you said. To your knowledge
does the mini sluice have an option to add a water system? I like the mini
sluice as it shows it has Plexiglas on both sides. You had the sluice high
banker? Is that a modification you added where the water supply comes into
both sides? The flow gate before the underflow traps, is that an add-on
with the water system only? I called the number on the site, but had to
leave a message as no one answered.
Eric Charters: I am not saying the machine don't work if run slow. All those deals, blue
bowls, work if slow. Sounds like a fair clean up machine. To get production
get yourself a new Chinese Trash pump or old 296 GPM 8.5 hp Honda pump &
make 8 inch riffle sluice + top hat 1"x1" 15 deg. backslant riffles, 2
inches space & Nomad 8100 carpet. Screen to 3/8ths and let er rip. Might
add 8 feet of 15 inch wide 1.5 inch per ft & 4 lbs/sq ft xpand mtl over
Nomad unbacked vinyl loop carpet 5/8" thick. Lotsa trix.
LEARNTOPLAYCRAPS: This is a variation of the New Zealand Boiler Box from back in the day.
Yes, the idea is an old one and grumpyprospector has refined it. The magic
is in control of the water running through the machine. The more control
you have, the more fine gold you can capture in the traps. If you are
loosing gold out the end of the box simply lower the water pressure until
it doesn't happen anymore. I am always amazed at how tiny the gold this
device captures is. Most of it in the first trap, too.
Abigail Lindsey: Hello, I'm concerned about the water-flow issue. I've read a couple
comments where the water-flow can blow the gold out. What do you set the
water-flow at to keep the gold in. Also, what kind of pump do you use if
you are running dirty water?
LEARNTOPLAYCRAPS: An UnderFlow sluice set up like mine is about 400.00. There are many
variations on the UnderFlow. Be sure to check out the products page of his
website.......grumpyprospector do t com.
Eric Charters: I can give you reasons why widely disparate feed products are better for
gravity devices. It's in the book, (Taggart) that gravity recovery devices
get higher recovery when fed a range of sizes, as the separation between
particles is greater & there is more free space to settle the target sizes.
Compaction and entrainment occurs when feed is are sized closely. It's
easier to pan coarse than 2 pan fine sand. Don't screen material fine when
panning or sluicing. - 8 mesh or greater is best
Abigail Lindsey: how much does your sluice weigh. Is it real heavy?
ColoradoPirateMiners: X grumpy Prospector, thanks for the meet and greet and the
coloradopirateminers are stoked to have you at our first club meeting
tomorrow night. Thanks kris
LEARNTOPLAYCRAPS: The water flow can flush out the traps just like too much water will wash
out any sluice box. I use a 1000 gallon per hour pump that is dialed down
to about 750-800 gallons per hour by a simple "y" valve that splits the
water flow between the sluice and a return hose. I use the same pump setup
for all my runs of material.......the muddy water changes the fluid density
a little so I may dial the water pressure down a little more depending upon
conditions. 3/16 screened material works great!!!
LEARNTOPLAYCRAPS: The UnderFlow has surpassed all my expectations. I have nothing but fine
flour gold where I'm mining. I do zero panning when I clean up. It is like
a license to steal from mother nature without doing all the work in the
end. It works just like on the videos. All you have to do is get the
material screened down to an appropriate size and adjust the water flow
down to where you can still kick out the blonde and black sands but retain
all the gold. It is really just that simple.
alioune mbodj: Dear i want to buy this sluice box as we use mercury and not lot pollution
, could you send me the contact of the seller or his website? ali
Alan Thompson: Hows it going, are you still dealing craps? Have you found enough gold to
quit your dayjob.Thanks for the video it was very informative. Also do you
have more craps videos in the future.
LEARNTOPLAYCRAPS: You can get one just like mine at grumpyprospector d o T c0m
Abigail Lindsey: Hello again, I was wondering about flour gold. Does that sluice prevent
flour gold from exiting and how low a water gph do you have to have it at
to prevent flour gold from exiting?
Colorado Walkabout: I do like the drop trap design and the plexiglass side is too cool. thanks
for sharing the product update.
XGrumpyProspector: Let me know if you want to see it in person. We are in Colorado Springs.
Glad to show it to you. Thanks for watching my videos!!
LEARNTOPLAYCRAPS: Yes Sir!!! That is what I said when I first saw the thing. I had to make a
video of it and show everybody.This way of sluicing is going to change both
placer mining and hard rock mining around the world.I have become such a
proficient miner and get all the fines in just one pass.No more panning
either. I'm a real good hand with a pan but this beats sitting around tubs
all day long. You get to see more with less effort. Thanks for commenting
and be sure to check out grumpyprospector d(0)t c 0 m.
mrobservations: yours looks slightly different than the models shown on grumpy's website.
what model did you get, and what modifications did you ask for .... please?
LEARNTOPLAYCRAPS: This is the recirculation high-banker from grumpyprospector. There are many
different sizes and set ups for the UnderFlow. This one has a 12 volt 1000
gallon per hour bilge pump for a boat to pump the water. I have it split by
a "y" valve before going to the sluice box so I can run the pump at full
capacity but still have full control of the water in the sluice. This thing
works so good it is scary. Everybody who sees this thing wants one and
LEARNTOPLAYCRAPS: I want to thank everybody for all the great questions regarding the
UnderFlow Sluice from grumpyprospector. The UnderFlow Sluice is changing
the way people mine Gold around the world. Be sure to order one before the
pricing goes up on these units. Also be sure to tell them that John's
YouTube videos brought you to them. Thanks for your time and for watching
YouStupidBunny: I've been considering this design for my garage. Which size sluice is that
and could you give a few details about your pump setup?
Eric Charters: haitch tee tee pee colon forward slash forwar slash
Don't mean to dismay you, but the fundamental principles were invented 100
years ago. If you can't follow the link just google "Undercurrent sluice
Gold: Its Occurrence and Extraction" By A.G. Lock
matthew mitchell: if you can .maybe you can post a video that show you testing how good the
sluice is please
Eric Charters: A big deal was a 16 Hp gas motor. Probably 105 foot lbs torque & 800 rpm,
but 16 HP still. Those engines & 6,000 rpm 15 ft lbs jobs today are
different. If you had real work, slow speed is always better. High torque
is less likely to stall even in multi cylinder 4 stroke. Boiler boxes -
they all had slow down baffles in them, which preserved heavies.
Buckminster Prescott's transverse semi circles are the shape. Omitted the
baffles. Others had short baffles in above V shaped undercurrents.
LEARNTOPLAYCRAPS: It really depends upon several factors. You have to play with the machine
to fine tune it to your conditions and your material you run. Your water
will have a different fluid density than mine with different types of clay
and sands. I test my machine by putting a known number of flakes at
different sizes and shapes in and see what sticks in the traps. You will be
amazed at how small of Gold can be captured at 1000gph. I have my machine
fine tuned to give me excellent results every time.
LEARNTOPLAYCRAPS: I've got just over 2 ounces of very fine flour gold to date from my spot
and there is more to be had. Down to 325 mesh with the UnderFlow.......no
problem. I ran my material 2 times and re screened down to 3/16 for my
final run. I panned through the bucket and found zero gold in it which
shows how good the UnderFlow works. You can prospect on any BLM land that
doesn't already have a claim on it.
LEARNTOPLAYCRAPS: If you contact the guys that make the UnderFlow, be sure to tell them I
sent you. Thanks!!!!
LEARNTOPLAYCRAPS: Gold is everywhere. You need to have the right concentration and the right
equipment to retrieve it. Grumpyprospector d o t com is where to go to get
the best piece of mining equipment made today. Good luck to you in your
mining and thanks for commenting on my video.
Pat Watters: made a post, but it seems to not have made it or is recycling somewhere.
The 120 volt system you've got your pump hooked up to, I know you said it's
about 40 or so years old, do you know if something like it is available on
LEARNTOPLAYCRAPS: I used to run the material again when I was testing the device, however,
once I learned how to use the machine effectively I began to see there is
no reason to do so. I still pan through some of the bucket material once in
a while if I change digging spots and from place to place to see if I'm
using too much water pressure. If you do find any in the bucket, simply re
run the material at lower water pressure. The UnderFlow is near perfect and
will make you a more proficient Gold miner.
LEARNTOPLAYCRAPS: You will have no trouble getting fine flour Gold with this set up. If you
screen your material down to 3/16", this set up will blast all the unwanted
material out of the traps and give you nothing but clean gold to suck up
and put in your pocket. It is like a license to steal from mother nature.
Let me know if you have any questions. I'm happy to help show the world
this great invention and what it can do for Gold mining world wide!!!!! No
more mercury or nitric acids to get the small stuff.
UnderFlow Sluice Box Gold Mining Equipment4.7
out of 5