On 11/08/2012 17:02, Steve Firth wrote:
http://www.youtube.com/watch?v=IEoOrWaMH9M&NR=1

Ahem, he does say:
Yeah, I agree. Air polisher might be safe in a wet condition, especially
if you are going to use much water in this video. We took care not to
wet the machine's motor part. (Although this machine said to be waterproof)