I'm not sure how well this has been addressed here, but nothing stood out when I searched the forums.
I just finished making a HUGE baffle-construction duvet for my bed. It has about 4 inches of loft at 90"x90", which was salvaged from old thrift-store-bought down jackets (something I probably wouldn't do if I were making it for backpacking gear). I made it inside my 2-man tent to keep the down from filling the house, but it was still kind of a disaster to work with.
I plan to make some down fill items for backpacking with better down, and would appreciate some thoughts or experiences people have had with it. How do you go about wasting as little down as possible? What is the best way to transfer the down? It actually occurred to me to make some sort of funnel to pour the down into the baffling or to use a shot-vac! (the latter would probably ruin the down).
It ended up taking me about 7 total hours of in-tent time just stuffing fists-full of down from the old jackets to the comforter. I realize it would take far less time using new packaged down.
P.S. the down from some of the jackets ended up being surprisingly nice!