Ultimaker sound damper

My Ultimaker is located in a shared room and the sounds it make are not liked by everyone as much as by myself.
Especially the wooden desk, on witch it stands, amplifies the sound of the motors.

Then i found some old unused springs and made a damper witch uncouple the Ultimaker from its desk.
The dampers reduce the sounds tremendous, in particular with high accelerations.
On the photographs you can see the sound level is reduced at least 3 dB which is quit a lot in a living room.

I'm su