I see one thing attached to the polisher - is it the tub or the pail? Where/what is the other piece?
How do you hold the polisher in place?
EDIT - Ok, I see the other pictures now

Does the weight of everything keep it in one place when it's on? Does the sander have a switch to stay on, so you can just turn it on, then use 2 hands for the task at hand?
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