The vacuum chamber is 2" x 25" inches and the total weight of the unit is only 2 pounds. The non-motorized suction dredge makes it perfect for places where you cannot use motorized dredges (check local laws). Narrow nozzle allows you to get deep inside cracks in bedrock to get told that was previously out of reach. I will be taking this pump out with me when my prospecting season starts in the coming weeks and hope to make some more videos to show how it works but if anyone wanted to make one as a project, I highly recommend it as it's a fun build with impressive results.Made by gold prospectors for gold prospectors, this hand operated gold dredge (sometimes called a gold sniper) is made of 2 inch PVC pipe The Ball-handle is made High Density plastic. The 1" x 8.5" nozzle is perfect for crevicing and sniping. The cost to make one of these pumps is really minimal, especially if you can scavenge suitable parts because it doesn't have to look pretty as long as it works as its supposed to, I think this cost me about £15 in total to make ($25). One of these 4" manual gold pumps can fill a 1/4" classifier in just 3-4 draws depending on the material being worked, so they can save a lot of time compared to smaller versions of the pump which can take 5-10 minutes to fill the same classifier. These pumps are great to use where you are not allowed to use any mechanical processing to remove material from rivers & streams as this is a purely manual process. I have a previous build version of this 4" manual gold pump on my youtube channel but due to trial & error, I have improved upon the previous design to make my 4" manual gold pump lighter, lose less material and create a smoother suction vacuum. Here's a video showing how I've redesigned and made my monster 4" manual gold pump/dredge.
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