[poulpi]

Actually, if you want something to stay, you should go for stone rather than metal.

Stone have low market value while metal can always be melted to do something else (like weapons).

It's one of my main take away of my art history lessons -> most antic art done on metal has been lost, but the stone remains!

[itronitron]

A friend of mine would use fiberglass resin, bondo, and plywood because they wanted their sculptures, which they then boxed into custom-sized crates, to last for at least one hundred years.

[inasio]

That was also what they went with in the 3 body problem