Steel or Graphite
Decided on measured speed and hand comfort, not age. Plenty of sixty-five-year-olds stay in lightweight steel and plenty of forty-year-olds move to graphite. The number that matters is total mass, not the material.
A driver is one club with one spec. An iron set is eight clubs that need to agree with each other, and agreement is where things fall apart. Lofts leave the factory inside a tolerance that can stack up into a five-degree step in the middle of a set. Lies drift at different rates depending on which club hits the mat hardest.
Then a golfer replaces a broken 8-iron with a second-hand one from a different year, and nobody records it. Two seasons later the 8-iron "goes funny" and the swing gets blamed.
Ninety minutes on the lie board and the bending machine turns all of that from a feeling into a table.
Individual clubs get individual bends, but these three are decided once and applied across the set. Getting them right is what makes a set feel like a family.
Decided on measured speed and hand comfort, not age. Plenty of sixty-five-year-olds stay in lightweight steel and plenty of forty-year-olds move to graphite. The number that matters is total mass, not the material.
Standard half-inch steps suit most people, but a shorter progression through the long irons helps golfers who struggle to make centre contact above the 6-iron. Set once, recorded per club.
One figure the whole set is built to, within a point. Mixed swingweights are the reason a set can measure correctly on paper and still have one club that feels alien.
A set that runs a forgiving head through the long irons and a smaller head from the 8-iron down is a perfectly sensible build, and it is easier to gauge properly than most people expect. The requirement is that length, lie, mass and swingweight stay continuous across the join.
That is exactly the kind of thing that goes wrong when a blended set is bought off a shelf and exactly what the card is for. We record the transition point and the specs either side of it so nobody has to guess later.
How frequency slope reads →Bring the wedges too. The loft ladder does not stop at the pitching wedge and neither should the card.
Most first-time iron sessions turn up at least one club that is not where its owner thought it was.