I'm sure drilling a hole in anything can weaken it. I doubt it destroys anything. Just giving some real world experience. Take it FWIW. Maybe the sticks are made differently but I highly doubt it. From what I've seen its all made by layers of fiber n resin pressed together in a vacuum. But I could be wrong.
I feel like most stick manufacturers are gonna tell you that though... "don't cut it, don't drill it" blah blah.
Maybe I don’t understand carbon fibre, but I thought the strength comes from overlaping fibres. If you break those linking fibres the strength is compromised.
Is there an engineer here who understands carbon fibre
This is the type of information you will find on line
....even a clean hole can greatly reduce the strength of a carbon fiber tube.
The strenght of the carbon fiber comes from the many fibres being intertwined and the length of these fibers making all of them work as a unit.
Drilling into them cuts the fibers length and can decrease the overall strength of the tube.
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