Pretty neat stuff - also these extractor systems are VERY expensive! I'll post photos & share results with y'all after mine is set-up. I found an HVAC place that is going to build the vented weld station. I'm going to pick a blower/puller fan this weekend & order that. I made a trip to a local Grainger location earlier this week & they were of NO help at all. I knew more about it than the lady who "helped" me. I think this is going to work very well - if I get the right fan.