My shop is generally well ventilated with a 900 CFM blower on my polishing hood exhausting through filters then directly outside. I have a standard stove hood exhaust fan over my soldering bench also exhausted outside. In both cases the run is less than four feet. I need to add what I will call spot ventilation to the bench spot where I do Delft clay casting and another bench spot where I run a pulse arc welder. These last two spots are only 3 feet apart and can be served by the same inlet hose if I design it to be movable. I have been looking at grow room exhaust fans. They typically are in the 200 CFM range with 3" or 4" slip connections. Running power is not a problem, I do it all the time. Does anyone have a better solution to this type of ventilation need? Thanks…Rob
Rob, I talked with a contractor I know who does remodels. He found a working stovetop downdraft and harvested it for me. I mounted it to a board, wired in a switch, and connected flexible dryer hose to both ends. I have it on a stand and can move it wherever I want. I put the output at a window and the inlet above or behind my equipment. I think the rated flow is in the 320 CFM range. It works great and was very inexpensive.
Craig…I hadn’t thought about a stove hood on wheels. Great idea…Rob
My second soldering station duct fan has failed after very few hours of runtime. The manufacturer sent me the second one free after the first failed, but it has done the same thing after limited use. I was using it as a booster downstream from a kitchen hood fan, which is still going after many years!
I remember some years ago finding fans mentioned on Orchid that were designed for higher temperature exhaust, but am having no luck with that. Can anyone suggest a 4" fan that can do 200 CFM or more and lasts?
Neil A
Neil…Look at greenhouse equipment suppliers…Rob
Look at greenhouse equipment suppliers…
Will do. The fans I used were intended for greenhouses.
Perhaps I should open them up and see what might be wrong, but I suspect electronics.
Neil