So... Yesterday while working my current yard project...I unearthed a brick sidewalk that is no longer used. It is about 2 inches down...now I have noticed (and this is how I found a sidewalk) I get a rediculously high signal (HEY STUPID - there is a coin right there signal) it bounces back and forth like crazy. Now the detector (Garrett Ace 350) says that this crazy high signal is about 2 inches down...
Now is the metal content so high and obvious that it is screwing up the depth and the object is actually under the bricks or is there something in the bricks that is making the metal detector go nuts? Maybe a metal pipe :-\ under the bricks?