CleanDamper Effect on Vibrations

Since the y axis vibrates a lot, I took this opportunity to test the effect of CleanDamper stepper vibration dampers for this type of machine. There are a number of youtube videos claiming great effect of stepper dampers on their systems. So I ordered a big damper for my big motor and reran the vibration measurements.

I could not hear any effect of the damper when moving the axis. Let's compare the result of the measurement without damper:

To the result with the damper installed. (please note the y scale)

It is not clear that this is an improvement. The low frequency excursions seem to have been diminished at the expense of larger high-frequency excursions.