My vote is for the "snap!" the pop-rivet tool makes as it breaks the mandrel when pulling rivets in Plexiglas. Yeah....they're soft aluminum rivets with soft aluminum mandrels...and nope, I haven't broken a canopy with one yet. But man, I hate that sound every time you pull one - because you slowly open your eyes and wait to see that first crack!
Other nasty sounds?!
Other nasty sounds?!
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