Makes me think of a youtube video I saw about making bearings for very old locomotives. The name will come to me while I am trying to sleep of course and not right now when I want it to.
It's the method of melting tin or another soft metal around the axle.
They used the smoke from an acetylene torch to form a pure carbon coating on the axle before pouring the molten metal into the surrounding support with clay dams to keep it from running out the edges.
BRB
It is called "Babbitt" bearings.
Any who, they used a torch without oxygen to create a thick layer of carbon soot on the axle before pouring the "Babbitt" in to the form.
I wonder if that layer of carbon would work in glass as a bead release.
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The Zombie Apocalypse is Upon Us.
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