It is nearly impossible to manufacture golf shafts with precisely the same stiffness in all possible directions of bending. This would require too many time-consuming manufacturing procedures and the price of shafts would more than double in price. While the top-quality shaft makers do manufacture shafts with very high accuracy and consistency, there are shafts in the golf industry that possess a variation in the consistency of the stiffness about their circumference. If severe enough, these inconsistencies can cause misdirection problems when the shaft is installed in such a way that those inconsistencies get in the way of the required bending of the shaft. When shafts are identified to be inconsistent in their stiffness, they are said to have a “spine.”
Therefore, we offer “spining” as an option. Spining involves, first, locating the most consistent bending position of the shaft; and second, installing (or re-installing in already finished clubs) the shaft so that its most consistent bending position is pointing directly toward or directly away from the target line. NOTE: Today, many shaft companies pre-test their shafts to locate a consistent plane of bending in the shaft, prior to painting and applying the name/logo to the shafts. Thus, with the vast majority of quality shafts made in the past few years, there is little need to have the shafts checked for spine location and re-installed in the club heads. This process and technique is mostly used for golfers with older sets.