I think it is interesting how changing little things can sometimes have a profound effect on sound levels. I see others speaking about hose lengths on dust collectors, or board size going through a planer. Fascinating. Just last night I had such an experience, even though it is not wood related. I have a stack on washer dryer in the bathroom closet, which backs directly up to the wall of my headboard in the adjoining room. I ran a small load, with just one garment, and the water was splashing aroud loudly, it was around 1:00 am so I did not want to hear the sound, but was tired enough I thought I would be able to sleep through it. The amazing thing that happened is when I added the laundry detergent, it immediately quieted way down. Seriously, it was radical the change. Figure that one out. Low level of water, sloshing loudly, add detergent, everything calms down, and gets very quiet. ??? Ok, back to wood, what else do you do to quiet down your tools?