Just sharing a project: my vibrator is on the same bench as my loading equipment. Anytime I cleaned the brass, it was louder than what I wanted, so I put it on a timer and just did it overnight. Today, got a wild hair and built a box our of 1/4" plywood and put it over the vibrator. Knocked the noise down quite a bit! Nothing fancy, just a wooden box. Would be neat to find some of that foam egg crate stuff and staple to the inside....