What types of metal can be buried inside of trees?

Firstly.... The old Cadillac with the tree growing out of it is real. This is not Photoshop. There are four old cars in Hopland, California alongside Highway 101 and all of them have full grown trees sprouting from them.  Turns out this is not uncommon.  Seemore here. 

Metal can be buried inside of trees accidentally or intentionally, such as for marking or preserving purposes. The types of metal that can be buried inside of trees can vary, but some common examples include:

1. Nails, screws, and staples: These small metal objects are commonly used in construction and woodworking, and can sometimes be left behind in trees.
2. Wire: Metal wire may be used to support branches or train the growth of the tree. It can also be used to protect trees from damage by animals.
3. Coins: Coins have been known to be placed in trees for good luck or to ward off evil spirits.
4. Bolts and brackets: These are often used to support tree houses or other structures built in or around trees.
5. Brass tags: Brass tags are sometimes attached to trees to mark them for research, surveying, or conservation purposes.
6. Iron or steel bands: These metal bands are used to support young trees or to protect them from animals. They may also be used to preserve historic trees or to mark them for conservation purposes.

It's worth noting that while metal objects buried in trees may not harm the tree itself, they can cause damage to saw blades or other woodworking tools if the metal is not detected and removed beforehand.

Both the Lumber Wizard and the Little Wizard are reliable and easy to use handheld metal detectors that are specifically designed for woodworkers. They are useful tools for identifying any hidden metal objects in reclaimed wood, ensuring that woodworkers can work safely and effectively.