Experiments with metal shafts went through quite a few phases. In 1924 the Union Components Organization of Torrington, Connecticut, U.S., drew a seamless shaft of significant-carbon metal that can be warmth-addressed and tempered. It was accepted via the R&A in 1929 and substantially replaced hickory while in the early 1930s. https://donovanzgnuc.canariblogs.com/harrington-park-ear-specialists-for-dummies-44917456