Since I picked the brains of so many on this forum before starting my Dust Collector rebuild, I thought I'd post a progress update and a pic or three.
I started with a factory PSI DC-2 equipped with 5-micron bag-style dust distributors. Phase one is conversion to a canister filter and addition of an internal Thien baffle.
IMG_0002.jpgThe PS-2 has a spiral ramp, so it required either the PSI retrofit filter or a donut to mount a third-party filter. Being both thrifty and a big fan of donuts, I went for the latter. After consulting with Rick Wynn at Wynn Environmental, decided to go with their model C-1425C, a closed-top filter with an integral mounting flange. It's also one of Wynn's nanofiber filters, rated MERV 15 and 99.999% efficient at 0.5 micron. That's performance PSI doesn't offer at ANY price, for $100 less(with shipping) than PSI's best filter.
ring_mounted.jpgRing_Underside.jpgfilter mounted.jpgThe donut is made from two pieces of 3/4" MDF, the upper one with an O.D. slightly larger than the DC-2's ring and I.D. matching the filter.The inner donut has an O.D. matching the inside of the DC-2's ring and ID matching the I.D. of the filter (14"). I cut the donuts with my router and a circle guide, glued them together with yellow glue and pinned them with 1 1/4" brads from my pneumatic brad gun. The lower donut fastens to the DC2 ring using brass knife-edge inserts and 10-32 screws; the same inserts and screws are used to fasten the filter to the donut. The foam seal on the bottom of the filter compresses nicely against the lower donut. I added a piece of 3/8x1/8 self-stick weatherstrip to the upper ring to seal the junction between donut and DC2's ring. The finished product is clean, efficient, and even looks like I knew what I was doing
baffle.jpgI wanted to use S2S tempered hardboard for the baffle, but can't find S2S hardboard in this burg if my life depended on it. I settled for a 1/8" hardboard wall panel with a smooth back surface and smooth white front. The front is smooth and slick, so I used it for the top surface of the baffle.The baffle is mounted with L brackets to the side of the DC-2's ring, with about an inch between the bottom of the spiral and the top of the baffle. I was careful to not compromise the surface where the lower band clamp once held the lower bag so I could get a smooth, clean seal with he new plastic lower bag.
DC2_Modified.jpgSpeaking of bags, the two clear plastic bags included with the Wynn filter couldn't have fit the DC2's ring any better--tight enough that I had to work at getting in on the ring. I re-used the original band clamp to secure the bag, just because it felt wrong not to use something.
I tested the unit using a couple of piles of sawdust hiding behind my band saw and planer and 10 feet of 6" hose. It seems to work well, but the real test will come when I get the ductwork hung--which I hope to start tomorrow following a tour of Little Rock's finest plumbing supply houses in search of 6" PVC.
D.
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