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I’ll have to find a suitable log for that and probably borrow a trailer, but I think it might be a fun idea so we’ll see if I can make that happen

I have used several other sluice designs on this stretch of that creek in very similar material and got much better recovery results, enough so that I am pretty confident that this is a fair representative result. With this method of testing there will always be a margin for error but that’s why I run several tests on each design, and I don’t need an exact number to tell me if the sluice is working as intended. When I have more time on the creek I try to test more of the tailings but I had limited time and bad weather to work with on this trip so I had to be a bit quicker than I would be ideally

I do have a few other variations that will hopefully work better

Will do at the next opportunity!

Thanks man

If it wasn't sitting on what is also my splitting stump I would!

I do try to manage that, but I miss a few every now and then particularly when I’m trying to work quickly

All my miners moss is backed, there doesn’t appear to be a defined clay layer but the gold in this spot seems to be concentrated in the first foot of material. As for classification, I’m trying to build a good sluice that functions without classification to improve efficiency

@@awi7317 hmmm I'd dig around to see if there is a clay layer also go up the the creek testing along the way ya might find higher speck counts further up. it's going to be tricky to make one that you don't need to classify unless you make a gold trap sluice. When you have larger rocks in the sluice it can mess the flow and blow out fine gold every object will create micro currents ahead and behind them . That's why you classify, try it without the riffles and use expanded mesh instead you'll get less block up and rocks will rolls easier over. Just make sure the smaller rocks are dancing in the cells of the mesh . You can get the mesh in the bbq section of Bunnings. I hope that helps 😀

If there is a clay layer then it’s a couple of meters down because I went down about a meter and a half on a later trip and didn’t find it, upstream does have better speck counts but in the summer there isn’t any water up there. As for the riffles/expanded mesh half the fun for me is building the gear where I can and it is tricky but I enjoy the challenge of giving a go. Thanks for your comments gadzee 🙃

@@awi7317 I totally get the challenge I'm just trying to help. It's all trail and error river sluices can be frustrating at times. If you get a metal pole you can drive it into the gravels to get a idea how deep the clay is. The old timers used to do that it also works for bedrock. Keep the video going AWI 😀

Thanks for saying so

You're quite right that the sluice would work better with screened material (as will all sluices), but my goal when I'm building new sluices is to try to make a system that will work well without needing classification which I think is the best way to improve efficiency for sluices considering how much time it takes. Also I am working on trialing these riffles in different arrangements to see if they may be improved.

@@awi7317 have seen your sluices in trademe and are great value. I’ve only just started panning after seeing a lot of it on tv haha. So if I go good may buy a sluice got 10 colours in 1 pan the other day in Otago

Yeah definitely, it always takes a little time to figure out new sluices

This is true, but I am trying to develop systems that will work effectively without classification to increase processing speed

@@awi7317 makes sense, but as you said you had it running at the wrong level, it looked to be sitting about 4 deg but should be between 8-10 deg tilt, that adjustment alone would make a huge difference, look forward to seeing the next video on it, thanks for sharing bud.

Yeah definitely got the angle wrong cause I was rushing to get ahead of the weather and should have just done it right instead

Also way to little water flow, angle would help but stream was to slow as well.

And yet this stone will cost you $12

Mostly just because i haven't seen any Clarkson riffles that are set up with the angle pointed directly towards the top of the sluice (and a slightly more saleable name), but the material is dancing quite well on top my old phone just hasn't got great resolution

I’m absolutely sure that it would but there’s so little gold in this spot that if I take the time to classify the material it’s not worth it anymore

not so much for the amount of gold but for fluid exchange between lights and heavies larger rocks disturb this flow and make it less effective but then they are so deep riffle's so maybe not that much difference@@awi7317

With any other sluice I would agree but I designed this one to handle lots of water so that I could run it in some different areas and if it’s giving 90%+ recovery as it is set up here I’m pretty happy with it

not really, most of the material gets washed over it fairly easily with the extra water flow other than the big rocks but it's actually helpful because then you can pick most of the rocks out of the sluice before they can affect the other riffles function

i usually find that i can get more gold by saving the time taken to classify and running more material rather than upping my recovery like 5% with the way i run this sluice

@@awi7317 I understand you can see in my video me feeding straight I but removing larger stuff on the flair plate. Them big bolder create low pressure and suck the gold out behind them and take some of your gold with them anyway good luck

@@IrelandGoldsluice999 definitely, I try to do the same but could be better good luck to you too man!