You are certainly asking all the right questions. That bodes well for your project.
I added 8 oz. of down to my JRB No Sniveller, making it much warmer, but with its new overfill it is better as an underquilt than a topquilt. That's because the added down makes the quilt's tubes somewhat stiffer, so it doesn't drape as well; there are more air gaps between the underside of the quilt and my body. I usually pull the quilt down so it makes better contact, and I can feel that it warms me faster when I do.
Both Demostix and Puckerfactor have noted the importance of
drape in a top quilt, so I got out an early top quilt I made using Primaloft insulation. It's true! The primaloft quilt was much better than I remembered, and I believe that its flexibility (inherent in the Primaloft insulation) is what makes it work so well. Of course, a down top quilt can drape well, too, but as you overstuff it, that quality is lessened.
Bookmarks