I've got a 2hp Grizzly DC in my shop (20' X 24') I've invested in a Wynn filter for it and built a Thien separator that mounts on top of a trash can. Even with that setup I'm still getting very fine dust in the shop. I've already been to the ER twice before I figured out that I'm highly allergic to spalted maple so I want to try to eliminate as much dust as possible from the atmosphere of my shop. I should note that I have a Jet air cleaner mounted to the ceiling that I run whenever I'm working in the shop.
I'm going to be moving to another state in a few months and I'll be building a new shop there. The shop will be in a detached 4 car garage sized building with the shop taking up half the building. I've been brainstorming and came up with an idea for my DC system. I'll run the ductwork to the Thien separator then the to the DC. I'm thinking of building a box around the Grizzly DC unit with the end wall of the box set up to mount several (4?) high efficiency disposable furnace filters on it. The box would be inside the shop area. I'm thinking that the box will contain the fine dust while the filters will allow the air to flow back into the shop.....hopefully dust free. I'll just need to clean out the box every once in a while. I thought of setting everything up to vent the DC outside but I'm moving to New Hampshire where I'll really need to keep the heat in the shop in the winter.
Does this sound like a feasible solution or am I not thinking of something that would prevent this setup from working?