GP9 Frame Material: Aluminum vs Brass

Red Caboose GP9 Metal Frame

Aluminum vs Brass, I have seen some debate over the years touting brass as a superior frame material, but I have to disagree! My chosen material for machining GP9 frames is 6061-T6 Aluminum alloy and for good reason. Some argue that the brass frame being sold by others is a better solution because it adds […]