I saw this too late! The trick is to use a block of brass, not wood, between the hammer and the foresight band. Brass transmits the shock of the blow without marring the steel. Wood is much more compliant, thus softening the blow.
I saw this too late! The trick is to use a block of brass, not wood, between the hammer and the foresight band. Brass transmits the shock of the blow without marring the steel. Wood is much more compliant, thus softening the blow.