A Clockmaker friend of mine uses a waterless solvent in his ultrasonic bath. I asked him if he was at all concerned about using a flammable liquid in an electric appliance. He said he never really thought about it. He gets good results with his cleaner and swears by it. I asked because my ultrasonic bath clearly states, right beside the on/off/timer switch: “Do not use flammable liquids. Use water based solvents only”. For those of you who use waterless flammable solvents, are there no warnings on your machines? Are you just ignoring the warnings? Am I just being a wuss to be concerned about this? Max.