Hahahah , we try to describe the silence the other day too here at the workshop and my coworker said that sounds like "silence" with "noise cancellation headphones" Loved it.

Out of joke, The silent performance is due to the balance of the slider and the contact points of it. Also where the bearing slot is positioned and the weight of the stainless steel rod that travels across the slider.

The more use the machine gets the better it runs. We recommend lubing the machine after every 50-70 hours of continuous use. I am uploading a video tutorial of "how to" lube the machine.