Explorers are silver coin magnets but now on my 4th model SE pro never even looked at the various disc. patterns but decided to make mine a two headed sword for local parks for clad and an occasional gold ring...Took some experimenting, reading and talking to myself but amazing what editing disc. patterns can do making it perhaps the best notch machine ever or at least one of the best as thru trial and error you can make us some interesting patterns. No gold rings yet but sure finding a lot of gas money without listening to a lot of junk...