Carbon, foam filled archery limbs in olympic recurve divisions have been used for years without you ever hearing anyone complaining or talking about possible negative affects of the foam.
With the flexing and shock load an archery limb goes through every shot, I wouldn't think it ever would be an issue in a pool cue shaft.
With the flexing and shock load an archery limb goes through every shot, I wouldn't think it ever would be an issue in a pool cue shaft.
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