Might have already been posted but: Start off by withdrawing 14 yew longs (u), then withdraw 'all' bowstrings, swap bowstring number 28 with yew long number 14, and click the last 2 spots together... Once you've made all your bows, withdraw 'all' bowstrings, deposit all your yew longs and withdraw 'all' unstrungs and repeat. String castle wars for a 1 click bank. Makes stringing so much faster. And therefore efficient.