Today's One Day Build is a blast from Adam's past: a recreation of a novel ping pong ball launcher that Adam made as part of an art show when he was in high school. Adam tells the story of how important this project was to him as a budding maker, and how its subsequent fate affected him. It's why Adam is compelled to rebuild that launcher today, using the same materials he used all those years ago. And it all starts with the disassembly of a vintage grocery store pricing labeler.