Steve Gottshall’s garage is littered with wheels — not necessarily unusual for a man who worked as an auto mechanic for 25 years. But the wheels are unusual, and so is what Gottshall does with them.

Damian Siekonic of Easton has a revolutionary hobby. He’s a student of the Revolutionary War, a re-enactor and a builder of 18th century cannon carriers. Today, two 100-pound carriers he made — and ...