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Sanding between coats of CV12/29
We finish most of our doors with 3 coats CV front and 2 coats on the back. I'm constantly trying to figure how to spray edges for enough build without hitting opposite side of door with over spray. First coat spray both sides of doors. 2nd coat sand front side and spray than sand back side and spray.Final sand front side and place doors 1/8" apart and spray straight down on face. Seems to give a near perfect finish on both sides.
We spray back and edges then dry on a rack, then spray front and edges, leave sitting on turntable while doing another door on another turntable, then come back and do a good wet coat on face and shoot edges again. You need to time this, you can not go too fast or the first coat does not start to set before the second coat goes on. Then when dry sand all sides and do one coat on the back with edges, place on rack when dry flip and one coat on front with edges. You need a small stand that won't capture over-spray and good air movement. We use a AAA so very little over spray from this system.
Hope that makes sense?
I don't get overspray on the back side when I sit the door on a small post, if on anything else it seems to bounce back on the underside of the door fromwhatever is beneath it. I only sand the sealer one time.
Gerry yes we use a Kremlin for spraying.
Yes we move to the rack each time. Our racks are on wheels so they are close to where we spray. It would be faster to have someone else in the booth but I spray by myself and don't find it to be a problem. Our stands have a 20 liter bucket filled with sand and has a pipe coming out of the top of it. We have different sized platforms that have a 6" nipple attached with a pipe flange and insert into the pipe coming out of the bucket. The larger platforms have a bearing system making it easy to rotate the piece, the smaller stands turn in the pipe support. I try to arrange the rack by size so I only need to change the platform once during a spray session. We have three racks each with 26 spots for doors and drawer fronts. 2 small drawer fronts to a position so room for lots of parts. Once a rack is full it is rolled back to a area with lower air flow to dry.
We spray full height gable ends on these platforms and can rotate them with one hand to spray all sides. I sometimes arrange to have help moving the large pieces but prefer to work alone for the rest. This has worked well for us but I am always looking for ways to streamline our process.