I was looking at some past threads, & the post BUILDING A SPRAY BOOTH shows a household fan in back of the booth.Is this all I would need to draw the excess powder into a furnace filter?Would the best place for this be at the bottom of the booth?I'm not worried about trying to reclaim any powder, but would like to contain it so my phone booth sized shop area stays as clean as possible.Is spraying something that can be done outside, as long as it is calm?I will be finding out first hand in the not so distant future, but how much over spray are we talking about?