I was searching this 200 year old back yard and got this signal. I found the target 10" down. It appearance was a blob of rust.
Almost filled it back over. What saved it was that the broken edge stood out. Well the 10" down in that area translated to a 200 year burial.
In other words that was the ax that clearwd the land for the 200 year old house that sat on that lot.
Now the conservation work. I soaked it in a bucket of water for a week, wire brushing every day. I then dried it and baked it in the oven
below 212 degrees for several hours. I then coated it with Rustoleum rust eating primer. It then got several coats of Rustoleum flat black paint.
The last step was mounting it in a block of black walnut. Frank...-