May Lotito wrote:I use tightly woven fabric for filling down/feather: sewing three sides and stitch down the channels; fill in equal amount of materials in each channel; stitch the side shut and even out the fillings; stitch a perpendicular line in the middle; then do the same at 1/4 line etc until fillings are secured in the grids. I make a duvet cover that is 30% smaller in both dimensions and put the insert in. There is no need to use ties or anything to hold the two together because of the pressure and friction. And the resulting duvet has a lot of loft and is smaller than the flat cover. This is a hindsight though because I intended to made a full size and it turned out to be a short twin.