You have embarked on a long but very interesting adventure! Well done to you man! You have our full support! 🙏

This is awesome. For subsurface fines try baffling the box to create dead zones

Fantastic Im looking forward to seeing these tests 👍

I was looking into gravity dredging and realized most people used to powered systems (including me) confuse water pressure with water velocity, because you increase velocity with increase pressure in those systems, but the Venturi effect is dependent on water velocity, not pressure. A long way to say that I think you need to do your own experiment with the sizing of the inductor nozzles or other stepping down of piping and not rely on what is accepted, because high volume can get you high velocity but not at the same sizing and steps as high pressure will and the research is on high pressure systems.

Hi ! 😊 I am working on getting gravity vacuum going , 1 - 1/2 100 feet - I hope it really sucks 😅 all fine gold so nozzle of hose has 1/4 inch screen - to help avoid jams - . When are you going Gold hunting ? Even just some Gold & Gem Stalking while avoiding Aussie critters be a Adventure 😊 Stay safe -,see you at your next video.

Man I would love to see you do a season on Bering sea gold.

Would be really interestes in the infinity. And just as you said about keenes testing I agree with you. You basically don't want a high pressure pump, you want volume for an infinity.

Join the GPAA (if they're still around). LOADS of resources for beginning and experienced prospectors alike. I joined when I was in my early teens. Learned a ton of stuff through their literature, videos, etc..

I’ll send this to my girl

If you are going to use bilge pumps or low powered pumps how about combining a suction nozzle along with a jet induction? Or maybe instead of a double inductor you use two or three inductors in a series on the suction line spaced a few feet apart, either with separate pump or with some type of manifold.

WOW - You went from kindergarten to Rocket Science real quick. 5 minutes gone and I'm still watching , hoping something useful turns up.

If you're going to use a 3d printer you could probably make an infinity or couple jet. It might even turn out stronger than the jet log type. A subie with infinity jet would be even more efficient if I remember correctly.

Now that you built he best sluice ever, are you going to now build the best dredge ever ?

Also, once you learn it, show some of your Fusion 360 tips. I've tried several times to learn it but unless someone nails my ass to the chair and threatens me, I don't think I'm going to get it.

Your videos are interesting. Whats your background chap? are you engineer or some sort of tradesmen?

Make sure you have a pressure pump ( enclosed impeller). electric gold dredge ??

To calculate the GPH/GPM needed for a waterfall or stream, multiply the width in feet by 30 GPH. A 6 inch dredge typically requires a pump that delivers 500-600 gallons per minute (GPH). However, according to Treasure Net, a 6 inch dredge may require 1600-2000 GPH to use the Gold Hog Matting properly. I really want this to work 2" electric dreadge would be aweaome

kzfaq.info/get/bejne/b6xiicWWm5y6XWw.html I don't know if you have seent this design yet. But I thought this was a neat idea and it's kind of a bit of both, suction and jet. I'd like to see one with a 4000 pump to see if it will move a good amount of material. Buy I am still shoveling snow and slush so could be a while before I get started. Or if you have any thoughts on this design before I start.

You have me worried. It sounds like something else will be coming down the pipeline that I will want to buy!

If you put in the following to chatchpt it will calculate it out "Using Bernoullis venturi principle. Calculate the flow rates in the following situation. 2in hose lifting 12" above the water where a 2in nozzle is outputting 4000gph. Use GPH" ≈952.74GPH Doesnt really make sense since its less than the pump output, chatgpt is wrong frequently but the calculations are interesting to see Heres the jist on Bernoulli fro chpt "This means that for a given flow rate at the inlet (determined by the pump), the flow rate at the outlet (throat) will be the same, regardless of the nozzle size. However, the velocity at the throat will be inversely proportional to the area of the throat. So, in theory, the smallest nozzle size will give the highest velocity at the throat, but the flow rate will remain the same regardless of the nozzle size. However, in practice, there are limitations such as frictional losses and practical constraints that may affect the actual flow rate." I say just go for the biggest nozzle and upsize the hose on the pump to reduce friction losses. Btw you are going to love the 3d printer. If you want any help designing models just let me know.