Now you see the wisdom of our having proceeded directly to the manufacture of those little nubbins. No casting, no machining, just direct electrochemical deposition. Precise, pure, and reproducible.
A little physics, a little chemistry, and *poof*, problems go away.
And as far as "Trojan Horse", think more along the lines of "Trojan Spiders", able to go anywhere a man can go, especially for example, underground ...