Spine & Flo Your Shaft Like the Pros

When you Spine & Flo your shafts you'll get more repeatable center strikers, more consistent gapping from club to club, a small gain in yardage, an increase in the quality and feel of your shot, and you'll reduce equipment related inconsistencies.
Back in the day when I was doing R&D on the Stiletto II Beta Ti driver I did a lot of robotic testing I did a little experiment for Spine & Flo... I built 2 identical 5 irons, one with the shaft properly aligned and one with the shaft just randomly installed and I marked the balls with a sharpie so it would mark the face after impact. The impacts on the face made by the robot were all one on top of the other and the marks that were on the face of the unaligned shaft were not even close to the same proximity as the properly aligned shaft.
So what does this mean? If a robot can't make consistent strikes in the absence of FLO or a properly aligned shaft, then I don't think it's likely that a human can either.
All of the clubs I build will be Spine & Flo'd, if for some reason you do not want this extra service that is provided free of charge (for new items) then we can just align the heads with the shafts logo up or however you prefer - but I do not recommend this "basic" alignment for Miura Golf Clubs, it's just not how they were intended to be used.
How I Spine & Flo Your Shafts

We put the shaft in a Neufinder and find the softest axis of the shaft, this is called N1 which refers to the natural bend plane of the shaft which is the spot the shaft wants to snap to when it's placed under load. Once we find N1, we'll mark a line over some painters tape and this is the spot that should be aligned at the target.

Then we'll clamp the butt of the shaft and mount a laser to the tip and twang it along the intended target line and observe the oscillations of the laser against a near by wall. If they are dead flat then bingo - nailed it - however if the laser wobbles or appears to want to creep away from anything other than a perfectly flat line of oscillation (Flo), we'll rotate the shaft a degree or two one way or the other until I get that flat line. With the shaft in this position we put a bigger line on the top of the tape. This identifies the spine and is the stiffest plane of the shaft that we refer to as S1.

On the left image you can see the flat line we are looking for and on the right you will see how it wobbles:

Now you might be wondering where you should put the soft side (N1) or the stiff side (S1) and that is a good question. Most either put it at 12 o'clock facing the sky or at 9 o'clock facing the target. It is my belief that having the softest axis aligned at the target allows the shaft to kick thru the ball precisely at impact more freely and having the stiffest axis aligned to the sky minimizes the tendency of the toe of the club to droop do to centrifugal force. I have done thousands up thousands of shafts and it has been my experience that the best performance comes from putting the stiffest axis, the spine, in the 12 o'clock position.

If you'd like to learn more about Spine & Flo you can read Dave Tutleman's article: All About Spines

Until next time,

David