The construction part of his calculator more or less makes sense to me.
The temp part- which is mentioned as experimental doesn't make enough sense for me to "borrow" any formulas. I can re-arrange them so to speak but it would just be excel tricks- not any real knowledge of the math.
Though it spits out 1.5" @ 39, 2" loft @ 28*, 3" @8* which lines up okay with my warmer temp ratings and some vendors mentioned.
Maybe Catsplat or someone more familiar with that side of the formula could help flush it out better.
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