Should You PURE Your Putter Shaft? – Golf Myths Unplugged

A Long Awaited Sequel

One of the best Golf Myths Unplugged that we’ve ever done was about the effects of PUREing a golf shaft [read it HERE].  I went in skeptical but came away convinced that every golfer should PURE their shafts.

It’s taken several years, but we’re back with a follow up: should you PURE your putter shaft?

How much difference does putter shaft weight make?  Find out HERE

The Myths

Myth #1 – PUREing a putter shaft improves impact location

Myth #2 – PUREing a putter shaft improves stroke consistency

Myth #3 – PUREing a putter shaft improves performance on mishits

Myth #  – Golfers can feel the difference between PURE’d and not PURE’d putter shafts

How We Tested

For this Golf Myths Unplugged, we used two pairs of nearly-identical putters.  All four heads were SWAG Handsome One putters [review HERE].  Two putters were shafted with KBS CT Tour shafts (steel) and two were shafted with Fujikura MC Smooth shafts (graphite, review HERE).  One of the Fujikura shafts was PURE’d, one was not.  One of the KBS shafts was PURE’d, one was not.

Thank you to SWAG, Fujikura, and KBS for their support of Golf Myths Unplugged.

Testing was done in two stages.  First, we had seven players test all four putters on SAM Puttlab.  Each player hit each putter seven times, aiming to make an eight-foot putt.  In the second stage, a different group of seven golfers tested the four putters on a twenty foot putt.  These putts were measured with Foresight CGQuad.

During all testing, the participants were blind to which shafts had been PURE’d and which had not.

All testing was done at and with the help of Club Champion.

The Results

On short putts, we found that PUREing a putter shaft improved the impact location for two of our testers.  PUREing the putter shaft did not negatively impact anyone, but five testers were equally proficient with PURE and un-PURE shafts.  These results were true for both graphite and steel.

When we tested long putts, our results were mixed also.  The PURE shaft outperformed the standard shaft for two testers and underperformed for one.  The other four testers did not show a difference.

This myth cannot be confirmed, but it is possible that that a given player will improve their strike location with a PURE’d putter shaft.

On the short putts with a steel shaft, we saw two players improve their consistency score by more than 2%.  The other five players were within that margin with both steel shafts.  With graphite, three players improved their consistency score by more than 2%.  Again, no player lost more than 2% consistency with the un-PURE shaft.

For our twenty foot putt, PUREing reduced the range of face angle-to-path numbers, though the averages and medians were nearly identical.  All other metrics were very similar.  With the steel shafts, PUREing shrank the range on angle of attack.  No metrics were negatively affected by PUREing.

Though this is not related to consistency, it was interesting to see that PUREing slowed the rate of closure for both steel and graphite shafts.

This myth also receives a rating of plausible, though it leans slightly closer to confirmedWe saw only positive affects of PUREing, but they were not that large and they were not seen in all golfers.

Understanding this myth is much more straightforward, though the results were still muddled.  On our longer putt, we had players intentionally strike a series of putts on the heel and toe and evaluated the results.

With both steel and graphite, PUREing did not show any benefits for preserving distance or distance consistency.  This is one segment of the testing where a putting robot would have been useful, as I suspect some players unintentionally swung a bit harder to compensate for their mishits.  It would also be interesting to run this test again on an even longer putt.

For start line, we saw a slight advantage for the PURE’d graphite shaft.  With steel, there was not any difference.

Because start line is such a critical element in making putts, even a small improvement merits rating this myth as plausible.

After hitting both steel or graphite putters, I asked each player to identify the PURE’d shaft and rate their level of confidence.  Our testers spanned a large range with confidence – as high as 8 and as low as 3.  Regardless of confidence, not one golfer in our test correctly identified both PURE’d shafts.

Interestingly, our testers were no better at identifying the PURE’d steel than the PURE’d graphite.  Half were right about steel and half were right about graphite.  I suspected that given the lively feel of the Fujikura MC Smooth PUREing that shaft might make a bigger difference, but I was incorrect.

The Takeaway

PUREing your putter shaft definitely won’t hurt your performance, but you may not see any improvements either.  It should also be stressed that if there are improvements, they will be measurable but not noticeable to the naked eye.

My personal feeling is that if you’re going to invest in a premium putter shaft in the hopes of finding those marginal gains that add up over time, there’s no reason not to PURE it.  As with the shaft itself, the results won’t be as dramatic as finding the right driver shaft, but the margin for error on the green is much smaller, too.

Matt Saternus

6 Comments

  1. Very interesting. Did you pure all four shafts and intentionally put two in the wrong way. Because you know you can sometimes get a shaft to go in the way it’s pured basically on accident. And what do you think about spine aligning putter shafts? Could it have similar results. I’d like to see some testing on pured vs spine aligned, on full shots and putts. I’m due for new wedges and am gonna spine the shafts and see how I feel about them. If I don’t like them I’ll have them pured. I pure everything but the putter (don’t see the need because your not swinging it that fast, benifits are probably very minute) And definitely see the difference from previous sets that where not. You’d just always would have that one club in every set that didn’t want to cooperate.

    • Matt Saternus

      Sean,

      The two “non-PURE’d” shafts were PURE’d and installed “against” the recommended position.
      I don’t have any data on spine aligning a putter shaft, but I have not found much value in the process overall.

      Best,

      Matt

  2. That’s interesting. I have used PURE’d shafts and have been finding the spine and FLO’ing my iron and wood shafts for years, but have never worried about the putter. Of course many putters use single or double bend shafts so you’re stuck with them as is. I always figured it wouldn’t make much difference in the putter given how stiff the shaft is and that it’s moving relatively slow.

  3. graham patterson

    I had my driver, 3 & 5 woods all pured some yrs ago. From the first game I made every fairway and beat my friend who’s more than competitive let’s say ! I’m a fan, and although I’d say the putter wouldn’t show much improvement, when I upgrade all my bats, I’ll definitely be puring them all.

  4. Interesting Matt…thanks

  5. Interesting, but doesn’t apply to us with double bend putter shafts :-(

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