Avid bowler here.
They are actually synthetic plastic now. I have a few samples of leftovers from an alley refresh and it’s just hard plastic. Harder than any ball, so it doesn’t wear easily.
They used to be made out of solid wood and it would definitely get impact marks. Most alleys with wood lanes would remind people no lofting the ball far.
Wood lanes literally are shaved down every couple of years to make them smooth again. They are becoming more rare to see and are a real treat to bowl on because of the character each lane gets from the years of use.
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