We built a 36"X36"X24" booth. Made the frame from 1/8" angle, and thin sheet walls. We picked up a duct box an cut a hole in it and mounted it to the bottom of the booth where we cut a matching hole and used a 14X20 duct filter. Out the side of the box an upspout to an 8" fan to the outside. We suspend the parts from the top and are able to spin them using a swivel. In the center of the filter sits a plastic tray with a piece of angle iron with a bolt welded to it. we attach a second ground strap to it so the excess powder is attracted to it and we can reclaim it or get rid of it and will have less filter clogging. Simple design...Less power needed in the motor, and you now have the ability reclaim powder. One thing I've learned in my years working in shops is to let your tools do the work. In this case we're letting the coating method do most of the work...The rest of the work was done by thinking it all out before building. You use grounding to make the powder stick to the parts...Why not use it to keep the booth clean too. We're currently using an 80cfm fan, which is not qiute enough. We'll be going to a 200cfm fan. Weather you're doing this as a hobby or as a business, you should always try to design your tools and workspace to allow you to work easier, and more efficiently.
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