Quoted from tk375:Sadly is 3 broken. I should of thought of coating them with clear epoxy before.. Game is very playable but it seems like this is a common problem with the bowling pins. Either way, I am happy with the machine, but I wish they make them out of ABS or something like that that can resist the impact. I will see if I can find a way to 3d print them later on, but I would love to be able to order some replacements from Dutch Pinball asap.
Based on my experience the epoxy just prolonged the inevitable. Rens said they were hoping the new pins were more durable, but I'm guessing they aren't if you have a newer machine. Taking the bowling alley out and replacing them, while not that difficult, isn't exactly a quick process.
I was thinking that a hollow or maybe even rubber bowling ball would be better since it just feeds through the bowling alley on a loop and isn't used for regular play. But that's if the ball hitting the pins is the issue. It could be the torque of them moving too, or a combination.