Found on the Internet: Post-Apocalyptic Key Replacements

I’ve never really thought about locks and keys in a post-apocalyptic world.  But what happens if you have a lock and you need to make a spare key?  Steel will be hard to come by and there are much better uses for it than keys, modern key duplicators require electricity, if you were to make one by hand you need some skill and could potentially waste a key by misshaping one of the projections.  Hackaday presented a post on how to (fairly) easily duplicate a key in the post-apocalyptic world.  You basically use a plaster mold of the key and zinc for the key.  Simple, elegant, my kind of process…

Making keys after the apocalypse [via Hackaday]