Re: Exhaust Fan recommendations for use when spraying?
I have been spraying solvent based lacquers for a long time and over the years have used a variety of fans and to the best of my knowledge none were or explosion proof. I had occasion last summer for a make shift spray booth in the back of a 16 ft enclosed trailer. I used a furnace fan and was surprised how much air it would remove compared to the one in my shop which is a barn type fan.Attached are photo's of a box I just built and now have two fans with the proper filter material in front of the fans to avoid the fans building up a coating of lacquer overspray. Both are two speed fans and have switches for each fan. I moved the furnace fan motor outside of the box to avoid it sucking in the overspray. I am not recommending this to anyone but it works quite well for me. The wire attached to the front of the box is to prevent the filter material being sucked into the fan.One thing that I noticed is that the furnace fan will move more air than the bottom barn type fan < just finished it Friday and used it for the first time today and it really sucks.
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