I get a lot of inquiries about “the copper piece on a locomotive.” They mean a toy train locomotive. Depending on the make of the train, there may be one copper piece on the motor, or there may be two.
Here’s what those pieces are called, how to find them, and how to care for them.
David Farquhar is a computer security professional, entrepreneur, and author. He started his career as a part-time computer technician in 1994, worked his way up to system administrator by 1997, and has specialized in vulnerability management since 2013. He invests in real estate on the side and his hobbies include O gauge trains, baseball cards, and retro computers and video games. A University of Missouri graduate, he holds CISSP and Security+ certifications. He lives in St. Louis with his family.