Silent hard disk in cardboard box

  I’ve been cunning a bit speaking about the “strangeness”… Still two month ago my assistant told that the clang disappeared when he touched the device with a palm. At that time we made first suggestions concerning the nature of the vibration. But at that moment my device worked properly, nothing clanged and I didn’t analyze this problem thoroughly. And now I place my palm on the device – now clangs, now doesn’t clang… Capricious thing…
   Solution has come itself. I cut a plate of radiator size out of 6 mm aluminium sheet and glue it in such way that it touches all fins of radiator and damps the fins’ vibration.
I degrease radiator and plate with acetone; mix epoxy with plasticizer and smear with it the end surface of every radiator fin. Then I lay down the plate and put a small weight on it.
 
  Test the operation of the silent hard disk after tar polymerization and establish complete victory over the clang.