Expecting arrival of the Super Dust Deputy (SDD) today. There isn't much solid information about inside and outside dimensions for the SDD and adapter sizes. The Amazon recommended reducer does not fit, but the Rockler dust rite adapters may, but I'm going to carefully check it out before I spend any money. I haven't decided for sure, but I'm thinking of going with Galvanized pipe from the SDD to HF unit. The problem again is that the 5 inch opening on the HF unit doesn't seem to fit anything else exactly. So I'm going to do some exact measuring and try to use standard galvanized pipe and fittings.
I really liked Stick's suggestion to recycle the filtered output of the HD/Wynn filter back into the shop. So I plan to do that and put a couple of filters in the return to eliminate any wandering dust. I will also have to enclose the breezeway with doors on each end and sealed as well as I can. I'll also cover the small gaps between the 2x floor in the breezeway with linoleum, to seal it and make it easier to clean up. Need to keep the AC/heated air in the space, so I may also insulate the ends as well, which will bean thick doors.
At any rate, I promise to post measurements, part numbers, pictures in a new topic. In some ways, I'm not looking forward to getting those fittings right, I have a box of expensive DC parts that don't fit anything. I have a couple of rolls of aluminum duct tape standing by.
The more I do, the less I accomplish.