Power drill spinning then slowing and powering off, short hard revs
Ambience, construction site. Compressor running close up with light hammering in background.
City ambience, construction site. Building house. Hammering and power tools on wood, medium close up
Ambience, construction site. Close up digger vehicle with beeping alarm. Distant power tools. Spanish ...
Communicator Alert, short fast pulses
Alien transmission or mechanical response, glassy wavy energy
Electronic arc, snappy, buzz, can be used for laser weld
Needle perspective sewing machine mechanical noise, some squeal 3
Needle perspective sewing machine mechanical noise, some squeal 2