@hgmacwoodsandwildlife: Part 2: What This 1930s Tool Actually Does! Dad sets the record straight on the 1930s McCormick-Deering sickle bar sharpener! Here's how the triangular stone works on the mowing rail and why hay was the ultimate fuel for old-time logging draft horses. #VintageTools #OldIron #McCormickDeering #LoggingHistory #FarmMachinery