Noise & Vibration Dampeners for RepRap Prusa Mendel. Reduces noise, which is produced by the machine during printing, by more then 20dB.Hello everybody, I've designed this noise dampeners to reduce the noise and vibration created by my RepRap Prusa Mendel. The main goles were to: reduce the noise and vibration as much as possible use the least material possible For maximum nose & vibration reduction effect you need to meet following criteria: Material used: PLA Fill density: 100% Please let me know how it worked for you.