No gear reviews, no rankings, no affiliate links. These started as internal reference notes and got tidied up because customers kept asking the same questions in the bay.
Reading stiffness at fixed stations along a raw shaft turns one vague label into a curve you can compare between brands. Here is what the curve tells us and what it does not.
Read the noteThe document that ships with every parallel-tip shaft is precise, short, and routinely skimmed. Four ways builders misread it and what each mistake produces.
Read the noteA CPM reading at the grip end is honest and useful and does not describe the last eight inches of the shaft at all. Why two clubs at the same frequency can behave nothing alike.
Read the noteThe oldest adjustment in club building, explained in terms of what physically changes. Includes what it does to swingweight, which is the part people forget.
Read the noteHalf an inch off the tip of a steel iron shaft and half an inch off a graphite one produce different amounts of stiffening. Why, and how much to expect.
Read the noteSame shaft model, same length, different reading. Six causes we see at the bench, ranked by how often they turn out to be the culprit.
Read the noteEverything here describes how we work on our own bench with our own equipment. Shaft manufacturers publish specifications for a reason and their charts always take precedence over anything written on this page.
You are welcome in the build room during your appointment. Most of these notes started as a customer question asked over a running lathe.