Thanks 🙏

I am not sure about a lot of steel plates. Some are to engrave the seeds and i feel that oxidation especially related to a fire or water could make them unreadable.

Tubes are only to put a paper in, right? So its still the paper risk.

Then there are some steel wallet where you can put the metal letters one by one or tubes that store metal rings … with ghose i would be afraid that the order of letters / words might be destructed some day …