Found an old 1988 Model Railroad Craftsman magazine that talks about a tool that produces nail holes perfectly for scratch building structures. It was a clever little device marketed by Wayne Hume of Vintage Reproductions and looked like a cross between a leather working tool and miniature cowboy's spurs. The device is a wheel with sharp points projecting out at equal distance from the center to make nail holes. It was called a rivet embossing tool. Does anyone market a tool like this now?