Nice job on you quilt and thanks for the tips!
I was wondering if you gave some thought to using a 'down eductor' made from PVC pipe and a shop vac? I was going to use this method on my next down project.
Go to this link and scroll down a few posts to the Down Eductor diagram:
https://backpackinglight.com/forums/topic/33573/

He also has a video of the process in his next post.
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paul, texas KD5IVP