About the Lab
A Calibration Habit That Wandered Into Golf
The Swingweight Lab did not start as a golf idea. It started as a complaint about scales that could not agree with each other, made by someone who spent a decade making sure instruments told the truth for a living.
Ten Years of Reading Instruments Before Reading Clubs
Marcus Fontenot spent his twenties calibrating flow meters and pressure gauges along the industrial corridor east of the river, the kind of work where a reading that drifts by half a percent gets flagged, traced and corrected before a shift ends. Golf was the hobby that kept him sane on weekends — until the day he weighed the same seven iron on three different pro shop scales in one afternoon and got three different swingweight letters back.
None of the three shops seemed bothered by it. That bothered him. A tool that cannot repeat its own reading is not a tool, it is a guess with a dial on it, and he had spent too many years around instruments that were held to a tighter standard than that.
The First Beam
He built a reference weight set from stock he trusted, checked it against a certified standard, and started re-calibrating his own beam scale before every session — a habit borrowed straight from the plant floor and applied to a hobby that had never asked for that kind of rigor.
From a Garage Beam to a Bluebonnet Boulevard Studio
What began as a folding table in a garage on the north side of town became a standing studio on Bluebonnet Boulevard once word got around a local men’s league that the guy with the calibrated scale was catching mismatches other shops never mentioned.
The Garage Beam
Weekend sessions for a handful of regulars, run off a single certified reference weight and a secondhand launch monitor bought off a closing golf shop.
Adding a Build Bench
Reshafting and regripping moved in-house once it became clear that sending builds out for assembly undid half the precision of the fitting itself.
The Bluebonnet Studio
Two fitting bays, a dedicated build bench, and a scale that gets checked against a certified weight before the first appointment of every open day.
What We Actually Believe
- A swingweight reading that cannot be repeated on a second scale is not worth writing down
- Head weight, shaft weight, length and grip weight matter individually, not just as one summed number on the end
- A fitting that ends without a written, repeatable spec sheet was a sales pitch wearing a lab coat
- Louisiana humidity is not a footnote — grips and adhesives behave differently here than they do in a dry climate, and a spec sheet should account for that
The River City Has Its Own Fitting Problems
Between the humidity, the heat that runs from April through October, and a golf season that never really pauses the way it does further north, clubs here drift out of spec faster than most fitting charts account for. Grips harden differently in a subtropical summer. Ferrule joints see more moisture cycling in a season of afternoon thunderstorms than a set up north sees in three.
None of that shows up on a generic fitting chart written somewhere with four real seasons. It shows up on the beam, if you are willing to keep checking it.
Want to See What Your Bag Actually Reads?
Bring what you play. We will weigh it before we recommend anything.