sensitivity and coin cleaning

[grego]

Hi all. I am asking for advice please, I am using a ace 250, When deteting on stubble or pasture with thick high grass and unable to get the coil flat on the ground would i increse the sensitivity to compensate or is my thinking of sensitivity all wrong.

Is there a method for cleaning green crusty copper pennys

Thank you
Grego

[Mike]

not sure on the sensitivity but i would slow your swing down to catch the faint signals or look for areas with less grass stubble cover , were the trackers have been running etc .

as to greenys , electrolosis can work as can a long soak in olive oil then pick away at the crud bits with a wooded tooth pick

[Chef Geoff]

There's no easy fix I'm afraid as it is site specific. If you can turn the sens up without it falsing then it certainly won't do any harm.
As for cleaning? if they are really crusty then the best method is to buy some hydrogen peroxide from the chemists and pop them in there for a few minutes

[ysbytymike]

Lemon juice is quite good for removing the green crud but it is a slow process. The up-side is it will not damage
any sensitive area's of the coin. Be careful though, hard scrubbing with a toothbrush can. I used to just do a gentle
brush every other day before renewing the juice. I used a china eggcup as the reservoir.

Ysbyty