Old timer told me my hammer strokes were all wrong...
I was working on a fire poker back in March, just banging away like I always did, when this retired blacksmith named Frank wandered into my shop. He watched me for like ten minutes without saying a word, then pointed at my hand and said "you're choking the hammer too tight, son. Let it bounce." I had no idea what he meant at first, but he showed me how to grip it loose near the end of the handle and let the weight do the work instead of my arm. Man, the first time I tried it I almost dropped the hammer on my foot, but after a couple tries I could feel the difference in my elbow and shoulder. I started getting cleaner strikes without wearing myself out after twenty minutes. Has anyone else had a veteran smith correct something basic you thought you had down?