Thank you all for the Willoughby information. I'm pretty good with a saruca / gem sieve already but it gets tiring after a few hours and does unpleasant things to my back. I'm hoping I can get the same results with a Willoughby once I learn how to use it. If it works out even half as well as I...
Greetings from the US. I'm looking into building something close to a Willoughby to use in finding diamonds at the Crater of Diamonds in Arkansas. The Willoughby technique is very close to what I do with my classifying screens and saruca. One thing I haven't seen described so far is how strong...
