Board Thread:Suggestions forum/@comment-26410366-20160203205206/@comment-26410366-20160728232708

Look through the other posts.

The keys are for opening gates.

How do you get the molted metal?

Why do you need to heat it if it already fits in the mold?

Molten stone meaning lava?

Each lock has its own master key to make other gold keys.

Make it required for each authority figure you mentioned to have a key.

What does your 4th paragraph have to do with anything?

You could suggest a fine chisel for carving out the lock... or have it crafted in multiple parts...