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Yodas Luke
I can understand the concept of using PP#3 to aim the sweetspot of the clubhead at the base of the inclined plane as one traces a SPL.
However, I have a hard time understanding how the hosel rotates around the sweetspot-to-grip axis - especially with respect to the Robot-Fit golf club testing machine. I would like to read your explanation of how the clubface passively rotates to square by impact in that machine.
Jeff.
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