 |  | Quote: |  | | Posted by ivan salis | | |  |
| well keep em as scrap aluminum if you want to -- cuz money is money afterall -- now here a old timers trick -- coins being small in overall size will drop out ( not be detected ) if one raises ones coil a fair bit --however the can being a much larger item will still "ring" up. 
its the conductivity issue -- several types pf metals and metal items have very similar "electrical conductivity" values --which is how a machine sorts out what it thinks its "found" by the amount disturbance the metal found causes to its electrical feild generated under its coil . -- its the machines "best guess" based upon what info it recieves--depth is also based upon a coin sized object and is also a "best guess" process. --- some machines are "better guessers" than others ( normally the higher end type)--mainly due to having more slots or numbers to better filter the finds into --the M6 is a fine machine and once you've learned it -- you should do well. learn to listen carefully and use the sounds along with the display to get best results.
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I think the over all conductivity of an object often causes
odd readings on machines.
If you think about it, an aluminum can may have more over
all conductivitry than a copper penny just because of the
difference in mass. A large iron object may also have more
overall conductivity.
On my analog machines, my trained ears can detect size
very well.
I am always comparing size to conductivity. That is how
I decide what to dig.
If gold is that big, it will have more conductivity.
A big object with low conductivity is not gold in my opinion.
I will bet you $2 to a donut I am right too.
People think I dig it all, and I do sometimes, but I cherry
pick if I am not able to clean it out.
I increase my odds by knowing size and how things sound.
It can be learned.
Happy Huntin,
Tabdog
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