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DeepTech

Can your machine past the iron test

A

Anonymous

Guest
Lay three nails approx 1/4" apart
Place dime on top of nails, can you id the dime.
Place dime under nails, can you id it.
Try using different size coins.
 
notwithstanding the claims of more than a few folks.
Maybe Beachcomber thinks his can.
John
 
Thanks for the response John
I posted the question in hopes of getting in-put from people using their choice of detector.
 
Try this. Place a dime on the ground or the floor. Make certain you are picking up the dime. Place a cardboard box ( no staples or metal in it); place four or five regular staples on top of the box over the dime. How good is your reading on the dime?
BW
 
Many folks don't realize that even one solitary staple can be enough to prevent the detector from seeing a coin.
John
 
Thanks for the idea BW, one thing for sure by trying these little test it will only make your keepers to trash ratio go up. Knowing how your machine acts on targets that you can see, will help you on targets that are in the ground. TB
 
An old 1974 Compass 100 khz TR. It doesn't discriminate and larger iron is detected but nails are invisible to it. Larger iron is easy to tell by the audio after using it long enough to learn but all the nonferrous trash can be a pill. I keep it for hunting around old homesite or other places where the ground is full of nails and other small iron. Depth is limited, 5-6 inches at most in our mild ground but I've pulled coins, CW bullets and buttons with it from places a VLF is useless. The nails and coins in the pic are a standard test I run on every detector I get.<center><img src="http://personalpages.bellsouth.net/j/b/jbms12/Mopics/nailtest.jpg" border=1></center>The only VLF I've done the test with that could get the nickel under that bent nail in all directions with disc set to reject the nail is a Gold Mountain GMT 1650. I've been using the same nails for over 10 years and have tested what's supposed to be the best in iron from every major American manufacturer. Will try the new Tesoros eventually but the Tesoro's I've checked thus far couldn't do it, including the Compadre and it's the best Tesoro in iron I've seen.
JB
 
I'll have to re-run some tests I did over a year ago.
One thing I know for sure is that you'll get different results depending if the nail is touching the target or not.
John
 
I was able to get a good signal all directions, on the Merc under each piece of trash pictured above, whether they were touching, on the ground, in air, etc. The trash was individually discriminated so that no signal was emitted over 1".
 
It's much, much harder to get a nickel under nails or other small iron than pennies or higher coins because nails are closer to iron in the conductivity range. There were several detectors, 180 degree disc range Tesoros, Whites Classic II and III, Minelab Musketeer, the X5, even one Fisher and a couple of Garretts that would respond to a penny or dime under the bent nail. The two Sovereigns I had would null with any coin under it. Some detectors would give a one or two way signal with the nickel under the nail, none but the GMT 1650 would give a signal in all directions and would do so until it was out of it's depth range. All the detectors were set to just discriminate out the nail except the Sovereigns and they were set at 0 on the disc control. Try your test again putting a nickel under your iron targets and see what happens.
JB
 
It even was able to get the Nickel sandwitched between the nail and the rusty washer.
John
 
The results I posted are 100% accurate as to the result I got with the coins lying on top of the ground and the nail on the coins. Evidently the bent rusty nail I use is a lot tougher than what you used or all the several dozen detectors I've tested on that nail in the last 10 years had problems except the GMT 1650 <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">.
JB
 
It's a square nail from an old stagestop site and it's 3 3/16 inches long by 3/16 of an inch at it's widest point. Didn't know that until I measured it after reading your post. It's evidently not the size as much as the shape it's bent in. I've got similar size straight nails that don't mask coins anywhere near as badly as that bent one.
JB
 
.....some of those old square nails use to be made of a ferrous/non-ferrous alloy mix. That should confuse things a little more....... <img src="/metal/html/wink.gif" border=0 width=15 height=15 alt=";)">
 
I've always been stumped as to why my detector can *see* a coin underneath a rusty washer which completely covers it yet the coin is masked by some nails.
Just goes to show us that many finds can be had by simply changing the search pattern.
John
 
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