When you guys are painting your car in your garage, how much overspray are you getting on everything in the garage? Or are you draping painters plastic over everything?
A lot of purists aren't gonna like my answer here but it works for me.
1. I open the big door to the garage and the back door to cause a cross flow of air.
2. I pick a day when the weather is going to cooperate. The wind has to be out of the north or northwest, or calm. Not a humid day. For instance, today wouldn't be a good day to spray for me because the wind is coming from the south and in through the big door. The only overspray I get from a HVLP gun is on the floor. When I used a Binks #7, suction feed gun I had overspray everywhere. Had to cover everything with plastic and hang plastic from the ceiling all around.
I've painted a lot of stuff over the years, boats, cars, locomotives, and things have changed quite a bit.