I've ordered the materials to start my first DIY insulation project. I want to try my hand at a under quilt or top quilt (leaning toward under quilt). I've been reading and reading and reading on HF and believe I've got the concept and ideas down for the most part. My biggest concern is what measurements I should start out with.
I'm in south Alabama and would simply like a quilt that would be comfortable down to between say 30-40 degrees. Looking for a 3/4 length quilt. In Alabama, with a top quilt with a footbox and good clothing I don't see the need for a full length one. I also would like a way to vent it for the warmer nights (which are more common). I'm 6'2 and fairly large build at about 220 lb. I've got plenty of M90 from thru-hiker along with about 15 oz. of 900fp down. I'm hoping the down will be enough to make a top and under quilt but I really have no idea.
Anyways, after all that, finally I'll get to my questions. First, I'd like to get some input as to what the starting length and width should be for the inner and outer shell. I do want it to be differentially cut. Secondly, what baffle height should I go for and how much down per chamber for my temperature requirements?
Last thing doesn't have anything to do with measurements, but I'm still a little confused on how to finish the baffles on the ends and are there any reasons to or not to put in darts on each end?
I know I'm asking alot and I'm still mulling through all of the information I've already found, but would appreciate any help I can get. Thanks in advance.
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