My Red Blue Bowl Gold conentrator Test 

I did the same think. Cut a decent size funnel to get a good hole then used an xxxl funnel inside the hole so i have a drain right down the centre

hos it go for super fine gold thats normally found in the black sand? iv never found flakes like that in my area

I think you have done an admirable job. I'm sure glad you did the gold and black sand mix at the end. I was hoping to see that. What did you use for the center tube? I'm looking into making a blue bowl too as it isn't rocket science.

👍👍👍

Good job! I did find the gold to be unusually large for what I normally find in black sand. It may be that you needed to be sure that it was visible. I wonder if you could test it for us using sand with gold as it is found naturally?

how did you attach the water input ? silicone ?

Bravo. Looking good. ciao.

Why do most DIY Blue Bowls only have one water exhaust into the bowl itself...would it not benefit to have multiple exhausts creating a better turn in the water...noticing how even in the BB, a lot of the classified piles up just prior to the exhaust. having three exhausts equally space all from the same hole would stop this issue

blue bowl make mistake Chen they make connus in the midle you repeet the same mistake.look at my creation I don't luse gold and can put a lot of Sand gold stays . And another problem is to big bowl weather lysing pressure and gold can't stay in the bowl.my bowl just 6 inch wide

use a water pump, you are wasting water man!