I think that I'm going to begin to design a quilt that I will someday make. The only problem is is that I have no idea about down or how much to use to achieve the temp rating that I'm going to want. Is there anywhere that tells how much down is needed to get a certain temp rating? Having this for different fill powers will be good too. The donw info is the most important, but I will be greatful for any and all info!
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