

It’s a very real phenomenon with documented health effects. You have to use a decibel meter that’s capable of detecting sounds just outside of audible range. Benn Jordan on YouTube recorded infrasound at the edge of the property line at Collosus XAI peaking at -96 dB.
https://youtu.be/_bP80DEAbuo





I recently upgraded from an Ender 3 V3 to the Snapmaker U1. I absolutely love it. Making a lid for the top was very cheap, too