Discrimination on smashed cans?

[ckpage86]

Hey gang. Been spending a lovely weekend honeymooning with the Silver uMax. My son and I found a bunch of clad, and overall I have a good feeling about the machine. I am curious though, the machine gives the ability to discriminate out foil, and tabs, both aluminum. I have noticed though that on a target with discrimination all the way up (I would assume a quarter or larger coin) I still pick up smashed soda cans. Do soda cans fall outside of discrimination range? It was pretty annoying, I thought we had something good and my son digs a 10" hole just to find a smashed can (twice).

 

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[Electricfrontporch]

No they won't discriminate out. But they do sound big and round kind of, compared to a quarter.
If you get in the habit of raising your coil you can get a better idea of depth.
If your still getting a signal and your coil is a foot in the air it's probably a can.
Hope it helps, I'm far from an expert.

Dig It All

Noah

 

[pinenut]

smashed cans are too big...

...and big targets are harder to disc out, especially the aluminum cans... The steel ones may disc out, depending on how big, how rusty and where disc is set.

 

[kcm]

If you try to disc out all aluminum, you'll probably also be missing any potential gold. It takes time and practice, but you'll soon learn to interpret what your detector is telling you. I think I read somewhere that the average is about 100 hours of use.

Also, there's a really great book that I would recommend reading:
https://www.amazon.com/Mastering-Te...ors-ebook/dp/B00GN27CTQ/?tag=treasurenet01-20

 

[steve1357]

No they won't discriminate out. But they do sound big and round kind of, compared to a quarter.
If you get in the habit of raising your coil you can get a better idea of depth.
If your still getting a signal and your coil is a foot in the air it's probably a can.
Hope it helps, I'm far from an expert.

Dig It All

Noah

You got it.

Detectors work by measuring the change in the rf field they produce. While aluminum isn't that good of a conductor, a large piece of aluminum will be seen as the same conductivity as a much smaller silver quarter.

Key is to verify your detector by seeing how deep you can see a quarter or silver dollar. If the detector is still seeing a small piece of silver a foot deep, move on...

 

[rogueaviation]

You will be able to hear the difference between coins, nails, Bobby pins, and cans after about twenty hours of really listening to your machine.

I still find it pretty hard to hear the difference between a nail and a Bobby pin, though nails sound a little sharper when swept from certain angles.

 

[watercolor]

Steve1357 and Electricfrontporch are right on.

I've dug my share of squashed soda cans over the years and will continue to dig them for good reason.
One day at a demo property I had just dug two, flattened soda cans and was about to dig what I thought was going to be my third. . . that third soda can turned out to be a Silver Peace Dollar.

 

[luvsdux]

I've dug quite a few over the years. What puzzles me is many of them were obviously intentionally buried when it would have been easier to walk a few yards and deposit them in the garbage. Not really meaning to rant here, but you'd think we'd never detect the tab that's supposed to stay on the drink can, either.
luvsdux