Staying Informed

One thing to keep in mind i believe, when building one for youself, is to use fans with explosion proof (no brushes) motors. A grain elevator blew up when I was a kid and we heard it 5 miles away inside my school. Someone mistakenly replaced a ventilation fan motor with the wrong type. One spark and the blew it's top like a mortar. Very dangerous. If it's not obvious, the dusty air inside the elevator was like atomized fuel/air. The same thing can happen with paint solvents.